E-book readers are shaping up to be a hot ticket when it comes to Android (s goog) devices. Barnes and Noble (s bks) has the Nook ready to ship, and readers from other vendors are expected early next year. Hopping on the bandwagon this week was network equipment maker Netronix, which is reportedly planning on making a reader based on Android. The company expects to ship a million of the devices in 2010, and will incorporate into them 3G and 3.5G capabilities.

While Android phone owners have been able to stream video to Ustream for a while now, they (strangely enough) weren’t able to view what they streamed on the phones themselves. The Ustream drought is now over, however, with this week’s appearance of the Ustream Viewer app in the Android Market. The new viewer works with all releases of Android currently in the wild: 1.5, 1.6 and 2.0.

Also revealed this week was a handheld Mobile Internet Device (MID) based on the ARM platform, one with a sliding QWERTY keyboard like many smartphones. The Inbrics MID has a AMOLED touch display, and adds Wi-Fi and GPS for added functionality.  Inbrics has indicated the new MID will be demonstrated at the upcoming Consumer Electronics Show in January.

In the meantime, a version of Google Maps Navigation, which adds turn-by-turn direction to Google Maps and was initially restricted to Android 2.0, was made available for Android 1.6. Some voice activation features are missing on this version, but it is fully functional otherwise.

Android
ARM Cortex – A8 800MHz processor
QWERTY Keypad
AMOLED touch screen
GPS, digital compass
WLAN

Un breve excursus sulle Avanguardie: l’arte cinetica e programmata, il MID – Movimento Immagine Dimensione – raccontata in un video esclusivo da Marco Meneguzzo, curatore indipendente e docente all’Accademia di Belle Arti di Brera.




Oggi si parla sempre di più – complice lo sviluppo del web 2.0 che vede un crescente ruolo degli utenti-fruitori come autori capaci di generare contenuti – di interazione e multimedialità nell’arte, forse dimenticando che sull’argomento è già stato fatto e detto qualcosa in tempi non sospetti.
Negli anni cinquanta e sessanta l’arte cinetica e programmata introduce il movimento nell’opera artistica e il concetto di un rapporto attivo fra l’opera d’arte e lo spettatore.
Diverse sono le denominazione attribuite a questa corrente. Con Arte cinetica si intese sottolineare, fin dall’inizio, il tema del movimento dell’opera; con Arte visuale si pose invece l’accento sulla visualità strutturata in una dimensione sperimentale; con Arte gestaltica si rimanda alle modalità della fruizione dell’oggetto artistico da parte dell’osservatore, basandosi sopratutto sugli studi di Rudolph Arnheim. Infine con l’arte programmata si approfondisce l’aspetto etico complessivo dell’arte, del suo farsi e suo organizzarsi; in questo senso rappresenta un momento storico nodale, poichè l’operazione creativa viene definitivamente a perdere ogni componente spiritualistica che, nonostante tutto, aveva caratterizzato quasi tutte le avanguardie storiche e perciò conquistando una precisa configurazione laica, antiromantica ed antimetafisica. In Italia si formano così diversi Gruppi: a Padova nel 1959 il Gruppo N (Alberto Biasi, Ennio Chiggio, Toni Costa, Edoardo Landi, Manfredo Massironi), a Milano nel 1959 il Gruppo T (Giovanni Anceschi, Davide Boriani, Gianni Colombo, Gabriele Devecchi, Grazia Varisco) e poi nel 1964 il Gruppo MID, tanto per citarne solo alcuni
Il Gruppo MID – Movimento Immagine Dimensione – composto da Antonio Barrese, Alfonso Grassi, Gianfranco Laminarca e Alberto Marangoni, si forma a Milano nel 1964, presentandosi al pubblico l’anno seguente, e si inserisce all’interno della storia dell’arte programmata. In questo video contributo, Marco Meneguzzo, curatore indipendente e docente all’Accademia di Belle Arti di Brera, offre una testimonianza sulla ricerca di Antonio Barrese, protagonista del MID e di una fase propulsiva e rivoluzionaria nella storia dell’arte, che ha certamente influito su molte tendenze di oggi.

Previously, Zest Air would send promos and airline updates via email. I noticed that they haven’t sent me one for the past few months. You would really have to visit their website for promo updates. Fortunately I was able to see some of their refreshing new ideas. They have posted the selling and travel dates for their promos. Moreover, they now offer packages for travelers like me! Check out some of the latest happenings from Zest Air!

Important Zest Air promo sell and travel dates to remember for 2010:

Zest Air New Year Sale

Selling period is from January 3 to 5, 2010

Travel period is from June 15 to November 15, 2010

The Love Seats Sale

Selling period is from February 12 to 14, 2010

Travel period is from June 15 to November 15, 2010

Summer Madness Sale

Selling period is April 1 to 7, 2010

Travel period is from June 15 to November 15, 2010

Mid-year Sale

Selling period is from June 1 to 7, 2010

Travel period is from July 1 to November 15, 2010

Zest Air Annual Sale

Selling Period is August 1 to 3, 2010

Travel Period is September 1 to 30, 2010

Halloween Sale

Selling period is  October 27 to November 2, 2010

Travel period is from November 1 to December 10, 2010

Early Christmas Sale

Selling Period is  November 23 to 30, 2010

Travel Period is from January 15 to March 15, 2011

IMPORTANT NOTICE: For all booking made and finalized before October 16, 2009, kindly click the image for the new flight numbers. It is important that you reconfirm your flight bookings through their hotline or ticket offices within 24 hours prior to the day of your flight to avoid inconveniences.

For those who want to travel stress-free, you simply have to book the package offerings from Zest Air. I believe the package rates are valid until March 30, 2010 and it already includes round-trip airfares, 3 days and 2 nights accommodations, daily set breakfasts and the 12% VAT.  It resembles the packages of PAL called PALakbayan and I guess that’s how Zest Air came up with their new product. So check them out!!!

To book your flights or for more details you may log-on to Zest Air’s website at anytime. You may also call their hotline at +632-855-3333 or email through leadagent@zestair.com.ph.

For inquiries and feedbacks you may email Customer Service Center at customerrelations@zestair.com.ph.

Biyahe na!!!

The UMID does not have an inbuilt HSDPA so that means I have to find an external solution for mobile Internet connectivity.

I have a Huawei USB broadband adapter but unfortunately the USB setup on the umid is not ergonomically possible for 2 handed usage so I have to opt for a tethering solution.

My usual tethering setup using pdaNET on the iPhone works flawlessly with the UMID.

I was at my brother in law’s place last night and my nephew was playing with his Nintendo DS so I decided to whip out the UMID and borrowed his DS for this pictorial size comparison.

It is certainly amazing to see how small and light UMPCs and MIDs such as the uMID and the S5 are these days..they weigh a little more than a DS but is capable of running full blown OSs.

The fascinating thing is watching how incredibly quick my 2 nephews, 11 and 8 took to the device.  I cranked up an Openoffice write session for them and in no time, they were typing away and using the touchscreen to navigate around in the absence of a onboard mouse.

Never ceases to amaze me how quickly the young ones take to computing these days!

….and yeah, they were impressed with the UMID!

Corruption électorale. C’est ainsi que de nombreux politiciens et observateurs ont qualifié l’annonce de Rama Sithanen durant son discours de mercredi. En effet, le budget 2010 prévoit l’embauche de 2 700 personnes. La concordance de ce recrutement avec la période électorale ne peut que faire peser des soupçons sur l’intention réelle ou inavouée du gouvernement.

La situation n’est pas aussi prosaïque. La nouvelle méthode de présentation du budget est encore méconnue du grand public. C’est dommage, car le Programme Based Budgeting (PBB) adopté depuis 2008 permet de comprendre quels résultats les ministères produisent en utilisant les ressources humaines, matérielles et financières mises à leur disposition. A la lecture du PBB de 2010, on comprend que les recrutements dont on parle semblent justifiés au vu des objectifs de performances fixés par les ministères concernés.

Santé, Education, Police et Maurice Ile Durable (MID), voici les secteurs qui vont accueillir les nouvelles recrues. Dans la police, par exemple, les 900 recrues seront vite mises à la tâche. Car le doublement du nombre de patrouilles mobiles et d’opérations de détection de stupéfiants est prévu en 2010. A la santé, le recrutement de 400 personnels soignants et de 300 médecins et spécialistes permettra notamment au ministère de mettre en œuvre un vaste programme de prévention, de détection et de soin des maladies non transmissibles. Tout en essayant parallèlement de diminuer le temps d’attente avant les interventions chirurgicales.

Ailleurs, le recrutement d’une centaine de personnes pour piloter le projet MID apparaît comme une excellente nouvelle. En effet, MID semblait souffrir depuis plus d’un an d’un double handicap. Un manque de moyens humains et une absence de politique claire. Une première étape semble avoir été franchie à travers ce budget. En effet, la centaine de recrues dans les différents ministères aideront, chacun à sa manière, à la concrétisation du projet. Soit en participant à l’élaboration des politiques comme la « Renewable Energy Development Strategy » ou en mettant à contribution leur expertise durant les audits énergétiques ou environnementaux des administrations publiques ou des entreprises. Avec le PBB, nous pourrons suivre la performance des ministères. A pareil époque, l’année prochaine, nous serons donc en mesure d’évaluer si l’apport de ces recrues a permis la réalisation de des objectifs ambitieux de ces ministères.

En attendant, la suspicion perdure. Et il n’est en rien injustifié. Car le gouvernement reste fautif de pratiques s’apparentant davantage à du copinage qu’à une gestion raisonnée des ressources humaines et financières. Le ministre du Tourisme, Xavier-Luc Duval, vient d’en donner la preuve éclatante. Porté par l’élan de la « réunification de la famille des bleus », il a recruté, en octobre, deux conseillers proches du Parti mauricien social démocrate. Son « Senior Advisor on Project Implementation and monitoring » et « advisor on information matters » reçoivent respectivement Rs 50 000 et Rs 42 500 par mois. Cela n’aurait rien de choquant s’ils avaient tous deux une expérience dans leur domaine respectif. Non seulement ce n’est pas le cas, mais en plus, ils ne sont tous deux titulaires que de simples « School Certificates ». De telles pratiques politiciennes expliquent pourquoi l’on continue à regarder les procédures de recrutement avec méfiance.

Un défi important attend le gouvernement durant le recrutement de ces 2 700 personnes. Il faudra que le pouvoir démontre clairement que ce sont les candidats les plus qualifiés et expérimentés qui ont été retenus. Par la nature même des emplois à pouvoir, il y a peu de chances qu’on découvre que des titulaires du « Certificate of Primary Education » se sont faits embauchés comme infirmiers. Toutefois, il y a toujours la perception qu’en temps électoral, les personnes proches du pouvoir ont plus de chances que les autres d’accéder à des postes de fonctionnaires.

Face à cette situation, le gouvernement gagnerait à faire de la compétence le seul critère de recrutement durant les mois à venir. Il faudrait revisiter le slogan de campagne de l’alliance en 2008 : « Putting competence first ». Mais il n’est pas dit que le gouvernement puisse s’appliquer cette rigueur. On peut toujours espérer l’improbable…

Er zijn 3 nieuwe VINTAGE Look Nike sneakers binnen gekomen: 2 modellen Nike Vandal High VINTAGE en 1 model Nike Blazer Hi VINTAGE. Deze zijn nu allemaal te koop op www.ilovesneakerz.nl en bij UNKNOWN (Alkmaar).

I bought a white UMID mbook some weeks back…now there’s a pink mbook being advertised for sale at www.dynamism.com.

Hmm…I don’t know Umid’s move to start pushing out a pink UMID M1 mbook?? Why PINK?  It’s not exactly a popular color…I really don’t see sale rocketing for a pink M1 (esp since the M2 is pipped to be out pretty soon) I’m wondering how many of the male gender would get a pink mbook?

My prediction is that the pink UMID will be on special offer in no time..:)

I started a book this week on what makes people click.

There isn’t much romance to making the conscious decision to follow a link on a Web site — or so you’d think. In fact, there may be. The author begins by explaining that we have three brains. She simplifies the science behind the idea by calling these brains the old, the mid and the new.

Apparently, the old brain is in charge of our survival and is constantly assessing our surroundings, deciding what’s safe for us. It’s also in charge of the automatic functions: breathing, digestion, movement, etc. The mid brain processes emotions. The new brain is what we refer to as the “mind” and is in charge of having thoughts, playing music, processing language, reading, speaking, etc.

The brains are referred to in this way based on their evolutionary order of development, with the newest brain having just most recently developped.

“It’s your new brain that is reading this book,” writes the author, and at that, I close the book, having just reached my stop. I look up at the clock on the train before exiting the car. It’s 8 p.m. again. (This too must have been the new brain.)

On my walk home, I continue to think about the brains. Is it the old brain that processes the darkness and glances back on hearing the tiniest creak in the pavement? Is it the new brain that floods memories of others walking next to me on this same path of cold and darkness that the old brain is taking in? And is it the mid brain finally that makes its presence known by a quick pang, a momentary feeling of loss at the thought of boy having walked with me on this same path just back in August. (Certainly, it’s the new brain that tells it to stop feeling that, and lucky for me, Mid listens.)

And surely it’s the new brain elaborating now. But were it not for Mid, there wouldn’t be any feeling, and without feeling, there is no writing. And without Old telling me to hurry up already with this entry because my fingers are as cold as my toes as I type this, New wouldn’t pitch in with an apt recommendation that I wear socks right after I hit the Publish button. Then Mid raises its hand again, and I burst in laughter at the thought that I am not in control (a thought that New is surely now making me recount) and I never have been the brain behind this operation as I always thought. It’s my brains, in fact, who are — the ultimate trio.

Fine then. Brains, I give up the reins. Here, I’d like to thank you three for making my existence interesting.

And since this isn’t me doing the thanking, but one — or perhaps all three — of my brains, I wonder if thanking themselves means they are grateful, self-reliant or haughty.

Or perhaps all three. After all, we’re multi-faceted.

E Ink is good stuff.  Gone is the eyestrain of staring in to a glowing screen for hours. Gone is the battery sucking LCD display.  E Ink makes sense.

But when E Ink devices are only now starting to dip down to reach the $199 price point (unless you look at used/refurbished devices), Mobile Internet Devices (MIB) like the SmartQ are starting to make a lot more sense.  For almost the same price as an E Ink device, you can buy a device with a bigger screen that’s in color and capable of playing video, as well as supporting a variety of opening systems and third party software.

Sure, being a jack of all trades, such a device is not a master of reading e-books.  But I suspect it’d be good enough.

And for the record, I’d prefer to have a smartphone like the iPhone or Droid and carry my my e-books around in my pocket at all times, but I can’t justify the monthly charges for a fancy data plan.

California’s Proper just recently dropped the new Nike Air Blazer Mid Supreme and Air Zoom Toki. Both of  which feature premium oiled leather and classic silhouettes. The special mixture of different materials, the rubber sole and the white piping are totally fresh with a contemporary adult feel. This way if you’re pushing 30, you don’t have to look like a high school student with neon swooshes and shoelaces.

30’s the new 20!

Oh, how we bet a few employees at T-Mobile and Danger are sure wishing they had alternative jobs right now. Especially if they were the ones involved with the server meltdown that resulted in thousands of Sidekick owners losing massive amounts of data.

Read more here: T-Mobile and Microsoft/Danger Just Got Sidekicked!

Emerson Extends MID Certificate To Elite Meters

Emerson Process Management has obtained an extension to its MID (Measurement Instrument Directive) certificate to include Micro Motion Elite Coriolis meters for low-flow applications. The Micro Motion meters are suited to cryogenic applications for dispensing liquefied-natural-gas (LNG) fuel to motor vehicles, including public transport and trucks.

MID certification means that when the Elite flowmeters are used as a component of a complete measuring system, such as a fuel dispenser, it is not necessary for the dispenser manufacturer to type test and certify the devices. The MID certificate, according to Directive 2004/22/EC, includes the Micro Motion ELITE Coriolis meters (CMF025, CMF050, CMF100, HC2 and HC3) for measuring mass in cryogenic applications.

Emerson can also act as a manufacturer of a measuring system and has obtained a system approval from NMi for its Micro Motion Elite series flowmeters, including electronics models 700, 1700, 2500, 2700, 3500 and 3700 for cryogenic applications. To meet the needs of manufacturers of LNG and CNG fuel dispensers, Emerson offers the Micro Motion CNG050 Compressed Natural Gas meter, designed to measure the mass of compressed natural gas.

I’m quite surprised there hasn’t been a big buzz on these! Not only is the design minimally fresh for a pair of skate shoes, but minimally fresh period.

Looking somewhat similar to the ALIFE “Everybody Hi“, these were created to mark Adidas Skateboarding’s straight-to-web video “Diagonal”.

Get’em HERE.

The market for IT professionals is still increasing and will continue to do so in the future, as the world
gets ever more dependent on computer systems. True or False?
· True (*)
· False
Consider your school library. It will have a database with transaction details of which student
borrows which books. Is a record of one student borrowing one book Data or Information?
· Data (*)
· Information
· Both
· Neither
Information which was gained from data is the same as: (Choose Two)
· Knowledge (*)
· Raw Materials
· Intelligence (*)
· There is no difference between data and information.
The first step in system development is to document the requirements. Why?
· Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
· It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)
· It allows application development to be conducted without having to consider database
design.
· It keeps businesses honest.
Which of the following are types of databases?
· Hierarchical (*)
· Relational (*)
· SQL
· Network (*)
Databases perform these functions….
· Running multiple applications on multiple client-servers
· Providing integrated software on fast processing servers
· Providing software running on a variety of platforms and configurations allowing companies
a structured way to access and manage their data (*)
· They run purely as client-based software on personal computers
In a physical data model, a relationship is represented as a?

· Column· Row
· Instance
· Foreign Key (*)
Which of the following statements about relationships are true? (Choose Two)
· They become Foreign Keys in the database. (*)
· They Must be Mandatory to be created in the database.
· They can be either mandatory or optional. (*)
· They must exist between two different Entities.
Which of the following entities most likely contains valid attributes? (Choose two)
· Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
· Entity: Pet. Attributes: Name, Birthdate, Owner (*)
· Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
· Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
All of the following would be instances of the entity ANIMAL SPECIES except which?
· Dog
· Bird
· Elephant
· Leaf (*)
.An entity can have many Unique Identifiers. True or False?
· True (*)
· False
The entity/relationship model is created before the physical database design model. True or False?
· True (*)
· False
All of the following are examples of ENTITY: Instance except two. Select the answers that are ENTITY:
Instance. (Choose Two)
· TRANSPORTATION METHOD: Car (*)
· ANIMAL: Dog (*)
· MEAT PRODUCT: Lettuce
· BODY PART: Larry Ellison
One Relationship can be both mandatory and optional at different ends. True or False?
· True (*)
· False

Which of the following are valid relationship degrees? (Choose two)

· 1:1 (*)
· 1:M (*)
· 1:O
· O:O

All the Attributes in a system are just written on the ERD, and they all go in the Top Left Hand Corner
of the paper. True or False?
· True
· False (*)
Entity names are always singular. True or False?
· True (*)
· False
Matrix Diagrams are mandatory when doing data modelling. True or False?
· True
· False (*)
Which of the following is true about subtypes?
· One instance may belong to two subtypes of the same supertype.
· Subtypes must be mutually exclusive. (*)
· Subtypes must not be mutually exclusive.
· Subtype entities may not have relationships to the other subtype entities, only the supertype
itself.
A Supertype can have only one subtype. True or False?
· True
· False (*)
A supertype can only have two subtypes and no more. True or False?
· True
· False (*)
You can only create relationships to a Supertype, not to a Subtype. True or False?
· True
· False (*)
When creating entities you must follow these rules: (Choose Two)
· Name them in Plural
· Name them in Singular (*)
· Exclude Attributes
· Include Attributes (*)

How would you model a business rule that states that girls and boys may not attend classes
together?
· Use a supertype
· Use two subtypes with relationships from class to student gender (*)
· Make the attribute Gender mandatory
· You cannot model this. You need to document it.
Can all constraints be modeled on an ER diagram?
· No, in which case you should let the database administrator handle them
· No, but you just explain them to the users so they can enforce them
· Yes, all constraints must be modeled and shown on the ER diagram
· No, so you should list them on a separate document to be handled programmatically (*)
“Only teachers may supervise exams” is an example of which of the following?
· A procedural business rule (*)
· An attribute that should be stored on the PERSON entity
· A structural business rule
· An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Why is it important to identify and document structural rules?
· Ensures we know what data to store and how that data works together. (*)
· Ensures nothing. There is no benefits to be gained from documenting your Structural
Business Rules. We need to concentrate on the Procedural Business Rules only.
· Ensures we know what Information to store and how that Information works together.
· All of the Above.
If a relationship can NOT be moved between instances of the entities it connects, it is said to be:
· Mandatory
· Optional
· Transferrable
· Non-Transferable (*)
Many to many relationships must be left in the Model. It is important to have them documented as
M-M. True or False?
· True
· False (*)
What uncommon relationship is described by the statements: “Each DNA SAMPLE may be taken from
one and only one PERSON and each PERSON may provide one and only one DNA SAMPLE”
· One to Many Optional
· One to Many Mandatory

· One to One Optional (*)
· Many to Many Mandatory
Relationships can be Redundant. True or False?
· True (*)
· False
A relationship from an entity back to itself is called a ___________ relationship.
· Mandatory
· Recursive (*)
· Many to Many Optional
· Transferrable
All entities must be given a new artificial UID. True or False?
· True
· False (*)
When data is stored in one place in a database, the database conforms to the rules of ___________.
· Normality
· Reduction
· Normalization (*)
· Multiplication
Would it be a good idea to model age as an attribute of STUDENT
· Yes
· Maybe it could stop us having to calculate someones age every time we need it
· Sometimes
· No – it breaks the Normalization rules (*)
Arcs are Mandatory in Data modelling. All ERD’s must have at least one Arc. True or False?
· True
· False (*)
Arcs are used to visually represent _________ between two or more relationships in an ERD.
· Sameness
· Differencies
· Exclusivity (*)
· An Arc is what Noah sailed on with all the animals.
An arc can be modelled as Supertype and Subtypes. True or False?
· True (*)
· False

No parts of a UID are mandatory. True or False?
· True
· False (*)
Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?
· True (*)
· False
A relationship can be both Recursive and Hierarchal at the same time. True or False?
· True
· False (*)
If Audit trail attributes are added to an entity they must be in the entities they are auditing. True or
False?
· True (*)
· False
Communication Skills, Team-working and Presentations skills are all important for Consultants. True
or False?
· True (*)
· False
Which of the following are NOT valid techniques for effective public speaking? (Choose Two)
· Whispering (*)
· Using specialist language and technical abbreviations when communicating technical
information (*)
· Being enthusiastic
· All of the Above

When you add the concept of time to your data model, your model becomes more complex. True or
False?
· True (*)
· False
Which of the following would be a logical constraint when modeling time for a City entity?
· People are born in the city and people die in the city.
· Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
· If you are doing a system for any French City, you would need security clearance
· You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
What do users of a system without the concept of time loose?
· Journalling becomes much easier.
· Journalling becomes slightly harder.
· The ability to track data over time. (*)
· Nothing is lost if a system does not track time.
If a system includes the concept of time, and it stores Start Dates, then End Dates becomes
Mandatory. For each Start Date attribute you create, you MUST create an End Date attribute and it
must be mandatory. True or False?
· True
· False (*)
Why would you want to model a time component when designing a system that lets people buy
shares via the Internet? (Choose Two)
· This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
· To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
· You would not want to model this, it is not important.
· The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)
All systems must include functionality to provide logging or journaling in conceptual data models.
True or False?
· True
· False (*)
The main subject areas taught by the Oracle Academy are:
· Computer Repairs

· Database performance tuning.
· Data Modeling, SQL and PL/SQL (*)
· Systems programming and computer architecture
Consider your school library. It will have a database with transaction details of which student
borrows which books. Is details of the total number of books out on loan in one given month Data or
Information?
· Data
· Information (*)
· Both
· Neither
Information which was gained from data is the same as: (Choose Two)
· Knowledge (*)
· Raw Materials
· Intelligence (*)
· There is no difference between data and information.
Databases are used in most countries and by most governments. Life, as we know it, would change
drastically if we no longer had access to databases. True or False?
· True (*)
· False
Incorrect. Refer to Section 1.
Section 1 Lesson 4
(Answer all questions in this section)
5. Which of the following are types of databases? Mark for Review
(1) Points

(Choose all correct answers)
Hierarchical (*)
Relational (*)
SQL
Network (*)
Correct
6. Databases perform these functions…. Mark for Review
(1) Points
Running multiple applications on multiple client-servers
Providing integrated software on fast processing servers
Providing software running on a variety of platforms and
configurations allowing companies a structured way to access and manage their data (*)
They run purely as client-based software on personal
computers

Correct
Section 2 Lesson 2
(Answer all questions in this section)
7. In a physical data model, a relationship is represented as a? Mark for
Review
(1) Points
Column
Row
Instance
Foreign Key (*)
Correct
8. An entity is instantiated as a ? Mark for Review
(1) Points
experience

instance
table (*)
none of the above
Correct
9. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct

10. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner,
Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary,
Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation,
Salary
ew your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.
Section 2 Lesson 2
(Answer all questions in this section)
11. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points
Dog
Bird
Elephant

Leaf (*)
Correct
12. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Correct
13. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points

(Choose all correct answers)
Are Required. The data model is not complete until all
entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required
You may create more than one Primary Unique Identifier for
an entity
Correct
Section 3 Lesson 1
(Answer all questions in this section)
14. Which of the following are valid relationship degrees? (Choose two) Mark
for Review
(1) Points
(Choose all correct answers)
1:1 (*)

1:M (*)
1:O
O:O
Correct
15. Relationships represents something of significance to the business? True or
False? Mark for Review
(1) Points
True (*)
False
Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review

(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)
Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot
Incorrect. Refer to Section 3.

Section 3 Lesson 3
(Answer all questions in this section)
18. Two entities can ONLY have one relationship between them. True or False?
Mark for Review
(1) Points
True
False (*)
Incorrect. Refer to Section 3
Section 4 Lesson 1
(Answer all questions in this section)
19. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points

True
False (*)
Correct
20. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. Which of the following is true about subtypes? Mark for Review
(1) Points

One instance may belong to two subtypes of the same
supertype.
Subtypes must be mutually exclusive. (*)
Subtypes must not be mutually exclusive.
Subtype entities may not have relationships to the other
subtype entities, only the supertype itself.
Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)
Correct
23. All ER diagrams must have one of each of the following: (Choose two) Mark
for Review

(1) Points
(Choose all correct answers)
One or more Entities (*)
Relationships between entities (*)
Arcs
At least one supertype and subtype
Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator
handle them

No, but you just explain them to the users so they can
enforce them
Yes, all constraints must be modeled and shown on the ER
diagram
No, so you should list them on a separate document to be
handled programmatically (*)
Correct
25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON
supertype and is unique to the TEACHER subtype
Correct

26. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay
some day.
Hiring a programmer to create additional programming code
to verify no goods are shipped until the account has been settled in full. (*)
Correct
27. How would you model a business rule that states that girls and boys may not
attend classes together? Mark for Review
(1) Points
Use a supertype
Use two subtypes with relationships from class to student
gender (*)
Make the attribute Gender mandatory

You cannot model this. You need to document it.
Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. If a relationship can NOT be moved between instances of the entities it
connects, it is said to be: Mark for Review
(1) Points
Mandatory
Optional
Transferrable
Non-Transferable (*)
Correct

Section 5 Lesson 2
(Answer all questions in this section)
29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect. Refer to Section 5.
30. A relationship from an entity back to itself is called a ___________
relationship. Mark for Review
(1) Points
Mandatory
Recursive (*)

Many to Many Optional
Transferrable
Correct
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. How do you include a relationship as part of the UID for an entity? Mark
for Review
(1) Points
By barring the relationship in question (*)
By reporting it in an external document
By including the UID from the parent entity as an attribute in
the entity
You cannot model that.

Correct
32. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. A unique identifier must be made up of more than one attribute. True or
False? Mark for Review
(1) Points
True
False (*)

Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. Until all attributes are single-valued, the database model is said to be: Mark
for Review
(1) Points
Normalized
Not Normalized (*)
1st Normal Form
2nd Normal Form
Incorrect. Refer to Section 5
Section 6 Lesson 3

(Answer all questions in this section)
35. Any Non-UID must be dependant on the entire UID. True or False? Mark
for Review
(1) Points
True (*)
False
Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. Primary UIDs are: Mark for Review
(1) Points
Something that each Entity should have, but is not
mandatory (*)
Useful as an alternative means identifying instances of an
entity, independent of their datatype
Mandatory in data modeling

Always comprised of numbers
Incorrect. Refer to Section 7
37. All relationships participating in an arc must be mandatory. True or False?
Mark for Review
(1) Points
True
False (*)
Incorrect. Refer to Section 7
38. Arcs are Mandatory in Data modelling. All ERD’s must have at least one Arc.
True or False? Mark for Review
(1) Points
True
False (*)

Correct
39. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct
40. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Test: Mid Term Exam – Database Design

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True

False (*)
Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Communication Skills, Team-working and Presentations skills are all
important for Consultants. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 8 Lesson 2
(Answer all questions in this section)

44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)
Correct

46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False
Correct
47. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False
Correct
48. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points

True
False (*)
Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York
Stock Exchange to be notified of this information.
To allow the sales people to determine when the shared
were bought and therefore at what price. (*)
You would not want to model this, it is not important.

The price of shares fluctuates and for determining price, you
need to know the time of purchase (*)
Correct
50. You are doing a data model for a computer sales company, where the price
of postage is dependant on what day of the week goods are shipped. So shipping is more expensive if
the customer wants a delivery to take place on a Saturday or Sunday. What would be the best way to
model this? Mark for Review
(1) Points
Use a Delivery Day entity, which holds prices against week
days, and ensure the we also have an attribute for the Requested Delivery Day in the Order Entity. (*)
Email current price to all employees whenever the prices
change.
Update the prices in the system, print out the current prices
when they change and pin them on the company noticeboard
Allow them to enter whatever delivery charge they want.
Correct
Skip navigation elements to page contents
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1

(Answer all questions in this section)
1. Once you have learned how to write programs and build systems, you no
longer need any input or involvement from any users, as you are perfectly capable of delivering the
systems the business needs and wants. Mark for Review
(1) Points
True. All that perfect systems need are correct programs.
False. Business requirements can and will change. For instance new legal requirements may
arise. (*)
True. All users do is delay systems delivery with their forever changing minds and new
requirements.
True. Users never know what they want anyway, so building systems are best left to the
professionals.
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review

(1) Points
Data (*)
Information
Both
Neither
Correct Correct
3. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is details of the total number of books out on loan in one
given month Data or Information? Mark for Review
(1) Points
Data

Information (*)
Both
Neither
Correct Correct
Section 1 Lesson 3
(Answer all questions in this section)
4. The first step in system development is to document the requirements. Why?
Mark for Review
(1) Points
Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)

It allows application development to be conducted without having to consider database
design.
It keeps businesses honest.
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Businesses involved in any of the following typically use databases to handle
their data: Finance, Logistics, Commerce, Procurement and Distribution? True or False? Mark
for Review
(1) Points
True (*)
False

Correct Correct
6. Oracle Database Software provides which of the following functionality?
(Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Graphical User Interface (*)
Internet Browser
Server (*)
Operating Systems
Incorrect Incorrect. Refer to Section 1.
Section 2 Lesson 2

(Answer all questions in this section)
7. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight
Gender
Natacha Hansen (*)
Correct Correct
8. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points

True (*)
False
Correct Correct
9. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
10. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points

Dog
Bird
Elephant
Leaf (*)
Correct Correct
Page 1 of 5 Next Summary
Section 2 Lesson 2
(Answer all questions in this section)
11. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points

ERD (*)
Process
Table
Attribute
Correct Correct
12. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)

Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct Correct
13. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.

Incorrect Incorrect. Refer to Section 2
Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Degree/Cardinality is important. True or False?
Mark for Review
(1) Points
True (*)
False
Correct Correct
15.
Relationship Names are optional. True or False?

Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)

Correct Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot
Incorrect Incorrect. Refer to Section 3.

Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)
19. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True

False (*)
Correct Correct
20. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Previous Page 2 of 5 Next Summary
Section 4 Lesson 1
(Answer all questions in this section)

21. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)

Correct Correct
23. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct Correct
Section 4 Lesson 2

(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct
25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points

A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct
26. How would you model a business rule that states that girls and boys may not
attend classes together? Mark for Review
(1) Points
Use a supertype
Use two subtypes with relationships from class to student gender (*)

Make the attribute Gender mandatory
You cannot model this. You need to document it.
Correct Correct
27. Why is it important to identify and document structural rules? Mark for
Review
(1) Points
Ensures we know what data to store and how that data works together. (*)
Ensures nothing. There is no benefits to be gained from documenting your Structural
Business Rules. We need to concentrate on the Procedural Business Rules only.
Ensures we know what Information to store and how that Information works together.
All of the Above.

Incorrect Incorrect. Refer to Section 4
Section 5 Lesson 1
(Answer all questions in this section)
28. Transferable relationships can only be mandatory, not optional. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 5 Lesson 2
(Answer all questions in this section)

29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect Incorrect. Refer to Section 5.
30. If two entities have two relationships between them, these relationships can
be either __________ or __________? Mark for Review
(1) Points
Redundant or Required (*)

Replicated or Required
Resourced and Really Good
Redundant and Replicated
Correct Correct
Previous Page 3 of 5 Next Summary
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
32. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. The first UID for an entity is called the Primary UID, the second is called
Secondary UID and so on. Mark for Review
(1) Points

Yes, this is the way UID’s are named. (*)
No, it is not possible to have more than one UID for an Entity.
Yes, but then it stops. No entities can have more than two UID’s.
No, each Entity can only have one UID, the secondary one.
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. An entity without repeated values is said to be on 1st Normal Form. True or
False? Mark for Review
(1) Points
True (*)

False
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT Mark
for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it
Sometimes
No – it breaks the Normalization rules (*)

Incorrect Incorrect. Refer to Section 6
Section 7 Lesson 1
(Answer all questions in this section)
36. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?
Mark for Review
(1) Points
True (*)

False
Correct Correct
37. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 7
38. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
39. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct Correct

40. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct
Previous Page 4 of 5 Next Summary
Section 7 Lesson 2
(Answer all questions in this section)

41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)

44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True

False (*)
Incorrect Incorrect. Refer to Section 10
46. Which of the following would be a logical constraint when modeling time for
a City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
If you are doing a system for any French City, you would need security clearance
You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
Correct Correct

47. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Time.
Correct Correct

50. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)
Correct Correct
11. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points

(Choose all correct answers)
Are Required. The data model is not complete until all entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required
You may create more than one Primary Unique Identifier for an entity
Correct Correct
12. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight

Gender
Natacha Hansen (*)
Correct Correct
13. Volatile entities have special requirements and need special attention when
you are doing data modelling. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct

Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
15. Relationships represents something of significance to the business? True or
False? Mark for Review
(1) Points
True (*)
False

Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. To identify an attribute as part of a unique identifier on an ER diagram, the #
symbol goes in front of it. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
17. Entity names are always singular. True or False? Mark for Review
(1) Points
True (*)

False
Correct Correct
Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct

Section 4 Lesson 1
(Answer all questions in this section)
19. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
20. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS

ANIMAL (*)
ANIMALS
DOG (*)
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

22. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
23. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct

Section 4 Lesson 2
(Answer all questions in this section)
24. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct

25. A new system would have a mixture of both Procedural and Structural
Business Rules as part of the documentation of that new system. True or False? Mark for
Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 4
26. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator handle them
No, but you just explain them to the users so they can enforce them
Yes, all constraints must be modeled and shown on the ER diagram

No, so you should list them on a separate document to be handled programmatically (*)
Correct Correct
27. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct

Section 5 Lesson 1
(Answer all questions in this section)
28. If a relationship can NOT be moved between instances of the entities it
connects, it is said to be: Mark for Review
(1) Points
Mandatory
Optional
Transferrable
Non-Transferable (*)
Correct Correct

Section 5 Lesson 2
(Answer all questions in this section)
29. How do you include a relationship as part of the UID for an entity? Mark
for Review
(1) Points
By barring the relationship in question (*)
By reporting it in an external document
By including the UID from the parent entity as an attribute in the entity
You cannot model that.
Correct Correct
30. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points

CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
32. A relationship from an entity back to itself is called a ___________
relationship. Mark for Review
(1) Points
Mandatory
Recursive (*)
Many to Many Optional
Transferrable
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)

33.
All entities must be given a new artificial UID. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. Normalizing an Entity to 1st Normal Form is done by removing repeated or
redundant attributes. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. When is an entity in 2nd Normal Form? Mark for Review
(1) Points
When all non-UID attributes are dependent upon the entire UID. (*)
When no attritibutes are mutually independant and fully independent on the primary key.
When no attritibutes are mutually independent and all are fully dependent on the primary
key.
None of the Above.
Correct Correct

Section 7 Lesson 1
(Answer all questions in this section)
36. All relationships participating in an arc must be mandatory. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
37. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness

Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct Correct
38. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

39. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct
40. Primary UIDs are: Mark for Review
(1) Points
Something that each Entity should have, but is not mandatory (*)

Useful as an alternative means identifying instances of an entity, independent of their
datatype
Mandatory in data modeling
Always comprised of numbers
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct

Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Database Design projects must use Consultants or they will fail. True or
False? Mark for Review
(1) Points

True
False (*)
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public
speaking? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical
information (*)

Being enthusiastic
All of the Above
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
47. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. All systems must include functionality to provide logging or journaling in
conceptual data models. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
50. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with TimTest: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)

41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Database Design projects must use Consultants or they will fail. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 8 Lesson 2

(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public
speaking? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical
information (*)
Being enthusiastic
All of the Above
Correct Correct
Section 10 Lesson 1

(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
47. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. All systems must include functionality to provide logging or journaling in
conceptual data models. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
50. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points

An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Tim
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. The market for IT professionals is still increasing and will continue to do so in
the future, as the world gets ever more dependent on computer systems. True or False? Mark
for Review
(1) Points
True (*)
False

Correct Correct
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review
(1) Points
Data (*)
Information
Both
Neither

Incorrect Incorrect. Refer to Section 1.
3. What is the difference between “information” and “data”? Mark for
Review
(1) Points
Data is held and understood only by Users
Information is held and understood only by users
Information and data have no differences – they are two words for the same thing
Data turns into information when it is stored in a database and accessed by systems and
users (*)
Correct Correct
Section 1 Lesson 3

(Answer all questions in this section)
4. Databases are used in most countries and by most governments. Life, as we
know it, would change drastically if we no longer had access to databases. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Databases perform these functions…. Mark for Review
(1) Points
Running multiple applications on multiple client-servers

Providing integrated software on fast processing servers
Providing software running on a variety of platforms and configurations allowing companies
a structured way to access and manage their data (*)
They run purely as client-based software on personal computers
Correct Correct
6. Software cannot operate without Hardware. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct

Section 2 Lesson 2
(Answer all questions in this section)
7. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Correct Correct

8. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct Correct
9. All of the following are examples of ENTITY: Instance except two. Select the
answers that are ENTITY: Instance. (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)

TRANSPORTATION METHOD: Car (*)
ANIMAL: Dog (*)
MEAT PRODUCT: Lettuce
BODY PART: Larry Ellison
Correct Correct
10. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False

Incorrect Incorrect. Refer to Section 7Skip navigation elements to page contents
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. Once you have learned how to write programs and build systems, you no
longer need any input or involvement from any users, as you are perfectly capable of delivering the
systems the business needs and wants. Mark for Review
(1) Points
True. All that perfect systems need are correct programs.
False. Business requirements can and will change. For instance new legal requirements may
arise. (*)
True. All users do is delay systems delivery with their forever changing minds and new
requirements.
True. Users never know what they want anyway, so building systems are best left to the
professionals.

Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review
(1) Points
Data (*)
Information
Both
Neither
Correct Correct
3. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is details of the total number of books out on loan in one
given month Data or Information? Mark for Review
(1) Points

Data
Information (*)
Both
Neither
Correct Correct
Section 1 Lesson 3
(Answer all questions in this section)
4. The first step in system development is to document the requirements. Why?
Mark for Review
(1) Points

Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)
It allows application development to be conducted without having to consider database
design.
It keeps businesses honest.
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Businesses involved in any of the following typically use databases to handle
their data: Finance, Logistics, Commerce, Procurement and Distribution? True or False? Mark
for Review
(1) Points

True (*)
False
Correct Correct
6. Oracle Database Software provides which of the following functionality?
(Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Graphical User Interface (*)
Internet Browser
Server (*)
Operating Systems

Incorrect Incorrect. Refer to Section 1.
Section 2 Lesson 2
(Answer all questions in this section)
7. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight
Gender
Natacha Hansen (*)
Correct Correct

8. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
9. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
10. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points
Dog
Bird
Elephant
Leaf (*)
Correct Correct
Page 1 of 5 Next Summary
Section 2 Lesson 2

(Answer all questions in this section)
11. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct Correct
12. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)

Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct Correct
13. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)

They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Incorrect Incorrect. Refer to Section 2
Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Degree/Cardinality is important. True or False?
Mark for Review
(1) Points
True (*)
False

Correct Correct
15.
Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot

Pigs Ear
Crows Ear
Crows Foot (*)
Correct Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot

Incorrect Incorrect. Refer to Section 3.
Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)

19. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
20. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

Previous Page 2 of 5 Next Summary
Section 4 Lesson 1
(Answer all questions in this section)
21. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True

False (*)
Correct Correct
23. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)

Correct Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct

25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct
26. How would you model a business rule that states that girls and boys may not
attend classes together? Mark for Review
(1) Points

Use a supertype
Use two subtypes with relationships from class to student gender (*)
Make the attribute Gender mandatory
You cannot model this. You need to document it.
Correct Correct
27. Why is it important to identify and document structural rules? Mark for
Review
(1) Points
Ensures we know what data to store and how that data works together. (*)
Ensures nothing. There is no benefits to be gained from documenting your Structural
Business Rules. We need to concentrate on the Procedural Business Rules only.

Ensures we know what Information to store and how that Information works together.
All of the Above.
Incorrect Incorrect. Refer to Section 4
Section 5 Lesson 1
(Answer all questions in this section)
28. Transferable relationships can only be mandatory, not optional. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct

Section 5 Lesson 2
(Answer all questions in this section)
29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect Incorrect. Refer to Section 5.
30. If two entities have two relationships between them, these relationships can
be either __________ or __________? Mark for Review

(1) Points
Redundant or Required (*)
Replicated or Required
Resourced and Really Good
Redundant and Replicated
Correct Correct
Previous Page 3 of 5 Next Summary
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points

True (*)
False
Correct Correct
32. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 1

(Answer all questions in this section)
33. The first UID for an entity is called the Primary UID, the second is called
Secondary UID and so on. Mark for Review
(1) Points
Yes, this is the way UID’s are named. (*)
No, it is not possible to have more than one UID for an Entity.
Yes, but then it stops. No entities can have more than two UID’s.
No, each Entity can only have one UID, the secondary one.
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)

34. An entity without repeated values is said to be on 1st Normal Form. True or
False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT Mark
for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it

Sometimes
No – it breaks the Normalization rules (*)
Incorrect Incorrect. Refer to Section 6
Section 7 Lesson 1
(Answer all questions in this section)
36. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?

Mark for Review
(1) Points
True (*)
False
Correct Correct
37. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 7

38. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
39. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)

An Arc is what Noah sailed on with all the animals.
Correct Correct
40. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct

Previous Page 4 of 5 Next Summary
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points

True
False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review

(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 10
46. Which of the following would be a logical constraint when modeling time for
a City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
If you are doing a system for any French City, you would need security clearance

You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
Correct Correct
47. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.

Dates must be stored with Time.
Correct Correct
50. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)

Correct Correct
Previous Page 5 of 5 Summary
1. The main subject areas taught by the Oracle Academy are: Mark for Review
(1) Points
Computer Repairs
Database performance tuning.
Data Modeling, SQL and PL/SQL (*)
Systems programming and computer architecture
Correct
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details of which student
borrows which books. Is details of the total number of books out on loan in one given month Data or
Information? Mark for Review

(1) Points
Data
Information (*)
Both
Neither
Correct
3. What is the difference between “information” and “data”? Mark for Review
(1) Points
Data is held and understood only by Users
Information is held and understood only by users
Information and data have no differences – they are two words for the same thing
Data turns into information when it is stored in a database and accessed by systems and users (*)
Correct

Section 1 Lesson 3
(Answer all questions in this section)
4. Users with detailed business knowledge can provide input to the Database Development Process.
True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Software cannot operate without Hardware. True or False? Mark for Review
(1) Points
True (*)

False
Incorrect. Refer to Section 1
6. Databases were invented in 1989. True or False? Mark for Review
(1) Points
True
False (*)
Correct
Section 2 Lesson 2
(Answer all questions in this section)
7. In a physical data model, a relationship is represented as a? Mark for Review
(1) Points
Column

Row
Instance
Foreign Key (*)
Incorrect. Refer to Section 2
8. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
11. All of the following would be instances of the entity ANIMAL SPECIES except which? Mark for
Review
(1) Points
Dog
Bird
Elephant
Leaf (*)

Correct
12. Which of the following entities most likely contains valid attributes? (Choose two) Mark for
Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct
13. A/an _________ is a picture of all the information that will form the basis for the finished
system. Mark for Review
(1) Points
ERD (*)
Process

Table
Attribute
Correct
Section 3 Lesson 1
(Answer all questions in this section)
14. Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct
15. One Relationship can be both mandatory and optional at different ends. True or False? Mark
for Review
(1) Points
True (*)

False
Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)
Correct

17. Entity names are always singular. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 3 Lesson 3
(Answer all questions in this section)
18. Two entities can ONLY have one relationship between them. True or False? Mark for Review
(1) Points
True
False (*)
Correct

Section 4 Lesson 1
(Answer all questions in this section)
19. Which of the following are suitable Entity names? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct
20. All instances of a subtypes may be an instance of the supertype but does not have to. True or
False? Mark for Review
(1) Points
True

False (*)
Section 4 Lesson 1
(Answer all questions in this section)
21. The “Other” subtype is mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct
22. All instances of the supertype must be an instance of one of the subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct

23. You can only create relationships to a Supertype, not to a Subtype. True or False? Mark for
Review
(1) Points
True
False (*)
Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have completely paid any
outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped until
the account has been settled in full. (*)

Correct
25. A new system would have a mixture of both Procedural and Structural Business Rules as part of
the documentation of that new system. True or False? Mark for Review
(1) Points
True (*)
False
Correct
26. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator handle them
No, but you just explain them to the users so they can enforce them
Yes, all constraints must be modeled and shown on the ER diagram
No, so you should list them on a separate document to be handled programmatically (*)

Correct
27. “Only teachers may supervise exams” is an example of which of the following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the TEACHER
subtype
Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. A Diamond on a relationship indicates the Relationship as Non-Tranferrable. True or False?
Mark for Review
(1) Points

True (*)
False
Correct
Section 5 Lesson 2
(Answer all questions in this section)
29. Many to many relationships must be left in the Model. It is important to have them
documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct
30. How do you include a relationship as part of the UID for an entity? Mark for Review
(1) Points

By barring the relationship in question (*)
By reporting it in an external document
By including the UID from the parent entity as an attribute in the entity
You cannot model that.
31. What uncommon relationship is described by the statements: “Each DNA SAMPLE may be taken
from one and only one PERSON and each PERSON may provide one and only one DNA SAMPLE”
Mark for Review
(1) Points
One to Many Optional
One to Many Mandatory
One to One Optional (*)
Many to Many Mandatory
Incorrect. Refer to Section 5
32. A relationship from an entity back to itself is called a ___________ relationship. Mark for
Review

(1) Points
Mandatory
Recursive (*)
Many to Many Optional
Transferrable
Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. People are not born with “numbers,” but a lot of systems assign student numbers, customer
IDs, etc. A shoe has a color, a size, a style, but may not have a descriptive “number”. So, to be able to
uniquely and efficiently identify one instance of the entity SHOE, a/an ______________ UID can be
created. Mark for Review
(1) Points
artificial (*)
unrealistic

structured
identification
Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. An entity without repeated values is said to be on 1st Normal Form. True or False? Mark for
Review
(1) Points
True (*)
False
Correct
Section 6 Lesson 3

(Answer all questions in this section)
35. Any Non-UID must be dependant on the entire UID. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct

37. An arc can be modelled as Supertype and Subtypes. True or False? Mark for Review
(1) Points
True (*)
False
Correct
38. Primary UIDs are: Mark for Review
(1) Points
Something that each Entity should have, but is not mandatory (*)
Useful as an alternative means identifying instances of an entity, independent of their datatype
Mandatory in data modeling
Always comprised of numbers
Incorrect. Refer to Section 7

39. Arcs are used to visually represent _________ between two or more relationships in an ERD.
Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct
40. All relationships participating in an arc must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
41. Which of the following would be good as a Unique Identifier for its Entity? (Choose Three) Mark
for Review
(1) Points

(Choose all correct answers)
Personal Identification number for Person (*)
Vehicle Registration Number for Car (*)
ISBN Number for Book (*)
Date of birth for Baby
Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)
42. If Audit trail attributes are added to an entity they must be in the entities they are auditing.
True or False? Mark for Review
(1) Points
True (*)
False

Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Database Design projects must use Consultants or they will fail. True or False? Mark for Review
(1) Points
True
False (*)
Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public speaking? (Choose Two)
Mark for Review
(1) Points

(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical information
(*)
Being enthusiastic
All of the Above
Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. Which of the following would be a logical constraint when modeling time for a City entity?
Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a country
change. (*)

If you are doing a system for any French City, you would need security clearance
You need a constant record of cities because they are still cities, even if leadership changes over
time, e.g. they get a new Mayor
Correct
46. There is only one way to model time in a Data Model. True or False? Mark for Review
(1) Points
True
False (*)
Correct
47. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False

Correct
48. When you add the concept of time to your data model, your model becomes more complex.
True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Why would you want to model a time component when designing a system that lets people buy
shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of this
information.

To allow the sales people to determine when the shared were bought and therefore at what price.
(*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of purchase
(*)
Correct
50. Which of the following is a logical constraint, that could result from considering how time
impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start Date of
the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Time.
Correct

False
Correct
9. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Are Required. The data model is not complete until all entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required
You may create more than one Primary Unique Identifier for an entity
Correct
10. An entity is instantiated as a ? Mark for Review
(1) Points

experience
instance
table (*)
none of the above
Section 1 Lesson 1
1.Why is it important to identify the business requirements before beginning to program a new
system?
· It is not important to have a blueprint for database design and programs. You should
just start coding as soon as possible, so you can meet your deadlines.
· It clarifies what a business wants to accomplish, so you can get your database design
and coding started correctly. (*)
· It allows application development to be conducted without having to consider
database design.
· It keeps businesses honest.
2.What are the major content areas covered in the Oracle Academy?
· Database programming and Computer repair.
· Database configuration and performance tuning.
· Data Modeling, SQL Java, and PL/SQL (*)
· Data Modeling, Java, and C+
3.There is a big increase in demand for Information Technology professionals in today’s market. True
or False?
· True (*)
· False
Section 1 Lesson 2
1.How do you turn “data” into “information”
· By testing it
· By querying it or accessing it (*)
· By storing it on a server
· By storing it in a database

2.Consider an example where an Oracle database works “behind the scenes” for common internet
activity. Which of the following best describes a database transaction?
· A person searches an airline website to find all available fares for a flight. (*)
· A business identifies what process it uses for purchasing inventory.
· A student places a link to their homepage from the school’s website.
· A person looking in the newspaper for good internet sites.
3.Which of the following are examples of data vs. Information
· A.Student age vs. average age of all students in class
· B. Bank deposit amount vs. total account balance
· C. Winning time for a race vs. length of race
· D. Price of computer vs. total sales of all computers for a company
· E. Both A and B. (*)
· F. B, C, and D
4.What are the results of having all your data in one central location? (Choose two)
(Choose all correct answers)
· Improved Performance (*)
· Easier access to data (*)
· Updates are harder to execute
· Decreased performance
Section 1 Lesson 3
1.Which of the following is the correct order for the Database Development Process?
· Strategy, Analysis, Design, Build (*)
· Analysis, Strategy, Design, Build
· Build, Strategy, Analysis, Design
· Design, Build, Strategy, Analysis
2.Data Modeling is the last stage in the development of a database. True or False?
· True
· False (*)
3.Oracle was one of the first relational database systems available commercially? True or False?
· True (*)
· False
Section 1 Lesson 4

1.Databases function more efficiently as….
· multiple applications on multiple client-servers
· integrated software on fast processing servers (*)
· client-based software of client servers
· client-based software on personal computers
2.Users would use which of the following software to access essential business applications? (Choose
three)
(Choose all correct answers)
· GUI Interface (*)
· Internet Browser (*)
· Server
· Operating System (*)
3.Which of the following is NOT a type of database?
· Hierarchical
· Relational
· SQL (*)
· Network
4.Personal computers (PCs) have been in existence since 1950. True or False?
· True
· False (*)
Section 2 Lesson 1
1.Which of the following are reasons we create conceptual models?
· A.It facilitates discussion. A picture is worth a thousand words.
· B. It forms important hardware system documentation.
· C. It develops business development methodology
· D. It forms a sound basis for physical database design
· B and C
· A and D (*)
2.Examples of hardware are:
· Data entry web pages, Mouse Hard disk.
· Mouse, Hard disk, Monitor (*)
· Monitor, Mouse, Printer, Printed Reports
· Monitor, Mouse, Mouse Pad, Cables and Wires, Hard disk

3.Examples of software are:
· Data entry web pages, Spreadsheets, Google and Yahoo search Engines, SQL Developer,
Oracle Application Express (*)
· Microsoft Word, Microsoft Powerpoint, Microsoft Excel, Mouse pad
· Mouse, Cables, Microsoft Word, Microsoft Powerpoint
· Monitor, Microsoft Word, Microsoft PowerPoint, SQL Developer
Section 2 Lesson 2
1.A/an _________ is a piece of information that in some way describes an entity. It is a property of
the entity and it quantifies, qualifies, classifies or specifies the entity.
· ERD
· Process
· Table
· Attribute (*)
2.In a physical data model, an attribute is represented as a/an
· Column (*)
· Row
· Instance
· Foreign Key
3.Which of the following entities most likely contains invalid attributes?
· Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built
· Entity: Pet. Attributes: Name, Birthdate, Owner
· Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed (*)
· Entity: Mother. Attributes: Name, Birthdate, Hair Colour, Eye Colour
4.An entity may have which of the following?
· experiences
· instances (*)
· tables
· none of the above
5.Unique Identifiers….
· distinguish one entity from another
· distinguish one instance of an entity from all other instances of that entity (*)
· distinguish all entities in a database
· distinguishes nothing
6.The word “Volatile” means….

· Changing constantly; unstable (*)
· Static; unlikely to change
· Large quantity
· Limited quantity
7.All of the following would be instances of the entity PERSON except which?
· David Jones
· Male (*)
· Angelina Rosalie
· Grace Abinajam
8.What is the purpose of a Unique Identifier?
· To uniquely determine a table and columns within that table.
· To identify a specific row within a table, using one or more columns and/or foreign keys.
· Create an entity that is unlike any other entity aside from itself.
· To identify one unique instance of an entity, by using one or more attributes and/or
relationships. (*)
9.Entities are usually verbs. True or False?
· True
· False (*)
10.Which of the following statements about attributes are true? (Choose Two)
(Choose all correct answers)
· They describe, qualify, quantify, classify, or specify an entity. (*)
· They are often adjectives.
· They have a data type such as a number or character string. (*)
· They must be single valued unless they belong to more than one entity.
11.In the following statements, find two examples of ENTITY: Instance. (Choose Two)
(Choose all correct answers)
· DAIRY PRODUCT: yogurt (*)
· VEGETABLE: grows
· BOOK: Biography of Mahatma Gandhi (*)
· BODY PART: Marilyn Manson
12.Some of the following could be attributes of an ENTITY called PERSON. Select the incorrect
attributes for PERSON. (Choose Two)
(Choose all correct answers)
· Age

· Freddy Wilson (*)
· Name
· Priya Hansenna (*)
Section 2 Lesson 3
1.Entity Relationship model is independent of the hardware or software used for implementation.
True or False?
· True (*)
· False
2.The purpose of an ERD is to document the proposed system and facilitate discussion and
understanding of the requirements captured by the developer. True or False?
· True (*)
· False
3.A well structured ERD will show only some parts of the finished data model. You should never try to
model the entire system in one diagram, no matter how small the diagram might be. True or False?
· True
· False (*)
4. Which of the following statements are true about ERD’s? (Choose Two)
(Choose all correct answers)
· A piece of information can be shown multiple times on an ERD.
· A piece of information should only be found one place on an ERD. (*)
· You should not model derivable data. (*)
· All data must be represented on the ERD, including derived summaries and the result of
calculations.
5.In the grid computing model, resources are pooled together for efficiency. True or False?
· True (*)
· False
Section 3 Lesson 1
1.What are three properties that every relationship should have?
· Transferability, degree, name
· Name, optionality, degree (*)
· A UID bar, a diamond, an arc

· Name, optionality, arcs
2.Relationships can be either mandatory or optional. True or False?
· True (*)
· False
3.Relationships always exist between
· 3 or more entities
· 2 entities (or one entity twice) (*)
· 2 attributes
· 3 or more attributes
4.In a business that sells computers, choose the best relationship name from CUSTOMER to ITEM
(computer, in this case).
· Each CUSTOMER must be the buyer of one or more ITEMS. (*)
· Each CUSTOMER must be the seller of one or more ITEMS.
· Each CUSTOMER may be the maker of one or more ITEMS.
· Each CUSTOMER may be the producer of one or more ITEMS.
Section 3 Lesson 2
1.Consider the recommended drawing conventions for ERD’s. Indicate which of the following
accurately describes diagramming conventions for entities and attributes:
· The * means that an attribute is optional and entity names should be plural verbs.
· The ‘o’ means that the attribute is optional and entity names should be plural verbs.
· The * means that an attribute is mandatory or required and the entity name should be
singular. (*)
· The ‘o’ means that the attribute is mandatory or required and the entity name should be a
singular noun.
2.Which symbol is used to indicate that a particular attribute is optional?
· *
· o (*)
· #
· &
3.On an ER diagram which symbol identifies an attribute as part of a unique identifier.
· # (*)
· *
· o
· x

4.Entity names are always plural. True or False?
· True
· False (*)
5.Entity boxes are drawn as:
· Soft Boxes (*)
· Hard Boxes
· Bold Circles
· Normal Circles
6.Attributes are written inside the entity box to which they belong. True or False?
· True (*)
· False
Section 3 Lesson 3
1.Two entities can have one or more relationships between them. True or False?
· True (*)
· False
2.After looking at the diagram, choose the sentence below that could be “read” from the existing
relationship (even though you’re missing relationship labels!)
· Each Student must have one or more Activities.
· Each Activity may be performed by one or more Students.
· Each Student may participate in one or more Activities. (*)
· Each Activity must belong to one and only one Student.
3.When reading a relationship between 2 entities, the relationship is only read from left to right.
True or False?
· True
· False (*)
Section 3 Lesson 4
1.A Matrix Diagram will help you with all of the following except:

· Defining Relationships Between Entities
· Identifying Entities
· Defining Instances of Entities (*)
· Naming Relationships
2.Creating a Matrix Diagram is mandatory when doing Data Modeling. True or False?
· True
· False (*)
3.Matrix Diagrams helps verify you have identified all possible and required relationships between
your existing entities. True or False?
· True (*)
· False
Section 4 Lesson 1
1.A subtype can have a relationship not shared by the supertype. True or False?
· True (*)
· False
2.Which of the following is the best scenario for using supertype/subtype entities:
· A pet store that sells small animals, because they each need different size cages and food.
· An ice cream store that sells ice cream in sugar cones and regular cones.
· A grocery store that gives customers a choice of plastic or paper bags.
· A vehicle dealership that sells cars, trucks, and boats on trailers. (*)
3.All instances of the subtypes must be an instance of the supertype. True or False?
· True (*)
· False
4.All instances of the supertype are also instances of one of the subtypes. True or False?
· True (*)
· False
5.A supertype should have at least two subtypes. True or False?
· True (*)
· False
6. Which of the following is a TRUE statement about the diagram below?

· Every Z is either an A or a B
· Every B is a Z
· Every A is a Z
· Every A is a B (*)
7.Which of the following is true about supertypes and subtypes?
· Instances that belong to two subtypes of the same supertype may be modeled as a one-toone
relationship between the two subtypes.
· Subtypes inherit the relationships and attributes of the supertype. (*)
· Subtypes may have no more than 2 levels of nesting.
· Supertype and subtype entities must be mutually exclusive.
8.The “Other” subtype is best used:
· For instances that belong to the supertype and at least one other subtype.
· For a subtype that does not have any of the same attributes as the supertype to which it
belongs.
· As an extra subtype to ensure that all instances of subtypes are mutually exclusive and
complete. By having an “Other” subtype, all instances of the Supertype will be of one
subtype type. (*)
· You should never have a subtype called Other.
9.When creating entities it is important to remember all of the following: (Choose Two)
(Choose all correct answers)
· Create a formal description. (*)
· Include attributes. (*)
· Do not use synonyms.
· Do use reserved words.
10.Which of the following are valid formats for an attribute? (Choose Two)
(Choose all correct answers)
· Character string. (*)
· Decimal.
· Number. (*)

· HEX.
Section 4 Lesson 2
1.How should you handle constraints that cannot be modeled on an ER diagram?
· Always let the network architect handle them
· List them on a separate document to be handled programmatically (*)
· Explain them to the users so they can enforce them
· All constraints must be modeled and shown on the ER diagram
2.How would you model a business rule that states that on a student’s birthday, they do not have to
attend their classes?
· Use a supertype
· Use a subtype
· Make the attribute Birthdate mandatory
· You cannot model this. You need to document it (*)
3.Which of the following is an example of a structural business rule?
· All employees must belong to at least one department. (*)
· Buildings to be purchased by the business must be current with earthquake building code.
· All overdue payments will have an added 10 % late fee.
· All products will have a selling price no less than 30 % greater than wholesale.
4.”Only managers can approve travel requests” is an example of which of the following?
· A structural business rule.
· A mandatory business rule.
· A procedural business rule. (*)
· An optional business rule.
5.A business rule such as “All accounts must be paid in full within 10 days of billing” is best enforced
by:
· Making the payment attribute mandatory.
· Making the relationship between CUSTOMER and PAYMENT fully mandatory and 1:1 on both
sides.
· Creating a message to be printed on every bill that reminds the customer to pay within ten
days.
· Hiring a programmer to create additional programming code to identify and report accounts
past due. (*)
6.Business rules are important to data modelers because:
· A. They capture all of the needs, processes, and required functionality of the business. (*)

· B. They are easily implemented in the ERD diagram.
· C. The data modeler must focus on structural rules, because they are easily represented
diagrammatically, and eliminate other rules that involve extra procedures or programming.
· D. Both A and C are true
7.Why is it important to identify and document business rules?
· It allows you to create your data model, then check for accuracy. (*)
· It allows you to improve the client’s business.
· It ensures that the data model will automate manual processes.
· None of the above.
Section 5 Lesson 1
1.If a relationship can be moved between instances of the entities it connects, it is said to be:
· Implicit
· Transferrable (*)
· Committed
· Recursive
2. A non-transferable relationship is represented by which of the following symbols?
· Heart
· Diamond (*)
· Circle
· Triangle
3.Non-transferable relationships can only be mandatory, not optional. True or False?
· True (*)
· False
Section 5 Lesson 2
1.When resolving an M:M relationship, the new relationships will always be __________ on the
many side.
· optional
· recursive
· mandatory (*)
· redundant

2.What uncommon relationship is described by the statements: “Each LINE must consist of many
POINTS and each POINT must be a part of many LINES”
· One to Many Optional
· One to Many Mandatory
· Many to Many Optional
· Many to Many Mandatory (*)
3.When are relationships redundant?
· When you can derive the relationship from other relationships in the model (*)
· When they have the same visual structure but different meaning
· When the information does not relate to the model
· When the relationships connect 2 entities and they each have distinct meanings
4.Many to many relationships between entities usually hide what?
· Another relationship
· Another entity (*)
· More attributes
· Uniqueness
5.If the same relationship is represented twice in an Entity Relationship Model, it is said to be:
· Replicated
· Removable
· Redundant (*)
· Resourceful
6.Which of the following are relationship types? (Choose Two)
(Choose all correct answers)
· One to Some
· Many to Many (*)
· One to Many (*)
· One to Another
7.Which of the following pairs of entities is most likely to be modeled as a M:M relationship? (Choose
Two)
(Choose all correct answers)
· STUDENT and CLASS (*)
· TREE and SEEDLING
· EMPLOYEE and MANAGER
· CAR and DRIVER (*)

Section 5 Lesson 3
1.If an intersection entity is formed that contains no attributes of its own, its uniqueness may be
modeled by
· Creating new attributes.
· Barring the relationships to the original entities. (*)
· Placing the UID attributes from the original entities into the intersection entity.
· None of the above.
2.Many-to-Many relationships are perfectly acceptable in a finished ERD. There is not need to do any
more work on them. True or False?
· True
· False (*)
3.When you resolve a M-M by creating an intersection entity, this new entity will always inherit:
· The attributes of both related entities.
· A relationship to each entity from the original M-M. (*)
· The UID’s from the entities in the original M-M.
· Nothing is inherited from the original entities and relationship.
Section 6 Lesson 1
1.A unique identifier can only be made up of one attribute. True or False?
· True
· False (*)
2.People are not born with “numbers,” but a lot of systems assign student numbers, customer IDs,
etc. A shoe has a color, a size, a style, but may not have a descriptive “number”. So, to be able to
uniquely and efficiently identify one instance of the entity SHOE, a/an ______________ UID can be
created.
· artificial (*)
· unrealistic
· structured
· identification
3.An entity can only have one UID. True or False?
· True
· False (*)
4.A UID can be made up from the following: (Choose Two)
(Choose all correct answers)

· Attributes (*)
· Entities
· Relationships (*)
· Synonyms
Section 6 Lesson 2
1.When data is stored in more than one place in a database, the database violates the rules of
___________.
· Normalization (*)
· Replication
· Normalcy
· Decency
2.When all attributes are single-valued, the database model is said to conform to:
· 1st Normal Form (*)
· 2nd Normal Form
· 3rd Normal Form
· 4th Normal Form
3.The following entity is on 1st normal form: True or False?
ENTITY: VEHICLE
ATTRIBUTES:
REGISTRATION
MAKE
MODEL
COLOUR
DRIVER
PASSENGER 1
PASSENGER 2
PASSENGER 3
· True
· False (*)
4.An entity can have repeated values and still be in 1st Normal Form. True or False?
· True
· False (*)

Section 6 Lesson 3
1.What is the rule of Second Normal Form?
· All non-UID attributes must be dependent upon the entire UID (*)
· Some non-UID attributes can be dependent on the entire UID
· No non-UID attributes can be dependent on any part of the UID
· None of the Above
2.Examine the following entity and decide which attribute breaks the 2nd Normal Form rule:
ENTITY: CLASS
ATTRIBUTES:
&nbspCLASS ID
&nbspDURATION
&nbspSUBJECT
&nbspTEACHER NAME AND ADDRESS
· CLASS ID
· DURATION
· SUBJECT
· TEACHER NAME AND ADDRESS (*)
3.An entity can be on 2nd Normal Form even if it has repeated values. True or False?
· True
· False (*)
Section 6 Lesson 4
1.No databases in the world is ever truly on 3rd Normal Form. Everyone always stops after 2nd
Normal Form. True or False?
· True
· False (*)
2.Examine the following Entity and decide which sets of attributes breaks the 3rd Normal Form rule:
(Choose Two)
ENTITY: TRAIN (SYNONYM: ROLLING STOCK)
ATTRIBUTES:
TRAIN ID
MAKE
MODEL
DRIVER NAME

DEPARTURE STATION
NUMBER OF CARRIAGES
NUMBER OF SEATS
DATE OF MANUFACTURE
(Choose all correct answers)
· TRAIN ID, MAKE
· DEPARTURE STATION, DRIVER NAME (*)
· NUMBER OF CARRIAGES, NUMBER OF SEATS (*)
· MODEL, DATE OF MANUFACTURE
3.As a database designer it is your job to store data in only one place and the best place. True or
False?
· True (*)
· False
Section 7 Lesson 1
1.To visually represent exclusivity between two or more relationships in an ERD you would most
likely use an ________.
· Arc (*)
· UID
· Subtype
· Supertype
2.All parts of a UID are mandatory. True or False?
· True (*)
· False
3.Which of the following can be added to a relationship?
· an attribute
· an arc can be assigned (*)
· a composite attribute
· an optional attribute can be created
4.Secondary UID’s are
· not permitted in data modeling
· mandatory in data modeling
· useful as an alternative means identifying instances of an entity (*)
· always comprised of numbers

5.Which of the following would best be represented by an arc?
· STUDENT (senior, junior)
· STUDENT (graduating, non-graduating)
· STUDENT (will-attend-university, will-not-attend-university)
· STUDENT ( University, Trade School) (*)
6.If the entity CD has the attributes: #number, *title, *producer, *year, o store name, o store
address, this entity is in 3rd Normal Form (“no non-UID attribute can be dependent on another non-
UID attribute). True or False?
· True
· False (*)
7.Which of the following is the definition for Third Normal Form?
· All attributes are single valued
· An attribute must be dependent upon entity’s entire unique identifier
· No non-UID attribute can be dependent on another non-UID attribute (*)
· All attributes are uniquely doubled and independent
8.This diagram could also be expressed as a supertype/subtype construction. True or False?
· True
· False (*)
Section 7 Lesson 2
1.In this simple diagram, what comprises the unique identifier for the student class entity?
· student id and class id
· student id, class id and course id
· course id
· student id and course id (*)

2.Which of the following would be a good Unique Identifier for its Entity? (Choose Two)
(Choose all correct answers)
· Identification Number for Person (*)
· Birthdate for Baby Which Includes Hour, Minute, and Seconds (*)
· Order date for Order
· Vehicle Type Number for Car
3.A relationship can be both recursive and hierachal at the same time. True or False?
· True
· False (*)
4.A recursive rationship should not be part of a UID. True or False?
· True (*)
· False
Section 7 Lesson 3
1.Historical data should always be kept. True or False?
· True
· False (*)
2.Modeling historical data can produce a unique identifier that includes a date. True or False?
· True (*)
· False
3.Audit trail attributes cannot be placed in the entities they are auditing, they must be placed in
separate, new entities, created just for that purpose. True or False?
· True
· False (*)
4.Which of the following scenarios should be modeled so that historical data is kept? (Choose two)
(Choose all correct answers)
· LIBRARY and BOOK (*)
· STUDENT and AGE
· STUDENT and GRADE (*)
· LIBRARY and NUMBER OF STAFF
Section 8 Lesson 1

1.How does the dictionary define “consultant”?
· A person who knows everything
· One responsible for knowing everything
· One who gives expert or professional advice (*)
· None of the Above
2.Which of the following skills are required for Consultants. (Choose Two)
(Choose all correct answers)
· Communication skills (*)
· Excellent drawing skills
· Must be able to speak at least two languages fluently, preferably four or more
· Team-working skills (*)
3.Only Consultants can develop new data models for a company, they are mandatory, so companies
must find them and hire them. True or False?
· True
· False (*)
Section 8 Lesson 2
1.Which of the following is a valid technique for effective public speaking?
· Making eye contact
· Using familiar words when communicating technical information
· Being enthusiastic
· All of the Above (*)
2.Your apperance at a presentation is not important, you should just show up and give the
presentation in whatever clothes makes you comfortable. So feel free to wear Jeans and old T-Shirts
etc. Being comfortable is more important than anything else. True or False?
· True
· False (*)
3.When you are involved in a group presentation, your group should practice before hand and agree
on who presents the various parts. You should all be involved somehow. True or False?
· True (*)
· False
Section 10 Lesson 1

1.How do you know when to use the different types of time in your design?
· The rules are fixed and should be followed
· It depends on the functional needs of the system (*)
· You would first determine the existence of the concept of time and map it against the
Greenwich Mean Time
· Always model time, you can take it out later if it is not needed
2.It is desirable to have an entity called DAY with a holiday attribute when you want to track special
holidays in a payroll system. True or False?
· True (*)
· False
3.When you add the concept of time to your data model, you are:
· Simplifying your model.
· Adding complexity to your model. (*)
· Just changing the model, but this does not change the complexity of it.
· None of the above.
4.What is the benefit to the users of a system that includes “time,” e.g. Start Date and End Date for
Employees?
· Increased usability and flexibility of a system; we can the trace e.g. the different managers an
employee had over time. (*)
· System becomes 100% unstable; allows users to log on and log off at will.
· Users are able to create complex programs in support of this component.
· Reporting becomes nearly impossible, users enjoy this.
5.If you are tracking employment dates for an employee, do you need to have an ‘End Date’
attribute?
· Yes, because you always need an end date when you have a start date
· No, because an end date is usually redundant
· Yes, if the company wants to track employee information, like multiple start and end dates
(*)
· No, not if the company likes the employee
6.Which of the following would be a logical constraint when modeling time for a country entity?
· People have births and deaths in their countries that must be tracked by the system.
· If you are doing a system for France or Germany, you would need security clearance.
· Countries may need an end date in your system, because they can change fundamentally
over time, e.g. Yugoslavia. (*)
· You need a constant record of countries, because they are still countries, even if leadership
changes over time, e.g. France, USA and most other countries.

7.Modeling historical data produces efficient ways for a business to operate such as:
· Modeling historical data does not help a business.
· Providing valuable information via reports to management. (*)
· Keeping track of holiday dates.
· Employees can work in two time zones.
Section 10 Lesson 2
1.Why would you want to model a time component when designing a system that lets people buy
bars of gold?
· The price of gold fluctuates and for determining price, you need to know the time of
purchase (*)
· To allow the sales people to determine where the gold is coming from
· You would not want to model this, it is not important
· The Government of your country might want to be notified of this transaction.
2.What is the function of logging or journaling in conceptual data models?
· Allows you to track the history of attribute values, relationships and/or entire entities (*)
· Gives a timestamp to all entities
· Represents entities as time in the data model
· Creates a fixed time for all events in a data model
3.Which of the following is a logical constraint that could result from considering how time impacts
an example of data storage?
· End Date must be before the Start Date.
· ASSIGNMENT periods can overlap causing the database to crash.
· An ASSIGNMENT may only refer to a COUNTRY that is valid at the Start Date of the
ASSIGNMENT. (*)
· Dates can be valued only with Time.
4.You are doing a data model for a computer sales company, where the price goes down on a regular
basis. If you want to allow them to modify the price and keep track of the changes, what is the best
way to model this?
· A. Create a product entity and a related price entity with start and end dates, and then let
the users enter the new price whenever required.
· B. Create a new item and a new price every day.
· C. Use a price entity with a start and end date.
· D. Allow them to delete the item and enter a new one.
· E. Both A and C (*)
· F. Both B and C

Test: Mid Term Exam – Database Design
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. The main subject areas taught by the Oracle Academy are: Mark for
Review
(1) Points
Computer Repairs
Database performance tuning.
Data Modeling, SQL and PL/SQL (*)
Systems programming and computer architecture
Correct Correct
Section 1 Lesson 2
(Answer all questions in this section)
2. What is the difference between “information” and “data”? Mark for
Review
(1) Points
Data is held and understood only by Users
Information is held and understood only by users
Information and data have no differences – they are two words for the same thing
Data turns into information when it is stored in a database and accessed by systems and
users (*)

Correct Correct
3. Consider your school library. It will have a database with transaction details of
which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review
(1) Points
Data (*)
Information
Both
Neither
Incorrect Incorrect. Refer to Section 1.
Section 1 Lesson 3
(Answer all questions in this section)
4. Entities are transformed into Tables during the Database Design process?
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Businesses involved in any of the following typically use databases to handle
their data: Finance, Logistics, Commerce, Procurement and Distribution? True or False? Mark
for Review
(1) Points
True (*)
False

Correct Correct
6. Databases were invented in 1989. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 2 Lesson 2
(Answer all questions in this section)
7. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
8. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 2
9. Which of the following statements about relationships are true? (Choose Two)
Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)

They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Incorrect Incorrect. Refer to Section 2
10. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight
Gender
Natacha Hansen (*)
Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 2 Lesson 2
(Answer all questions in this section)
11. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points
Dog
Bird
Elephant
Leaf (*)

Correct Correct
12. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Incorrect Incorrect. Refer to Section 2
13. An entity is instantiated as a ? Mark for Review
(1) Points
experience
instance
table (*)
none of the above
Incorrect Incorrect. Refer to Section 2
Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)

Correct Correct
15. One Relationship can be both mandatory and optional at different ends. True
or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. To identify an attribute as part of a unique identifier on an ER diagram, the #
symbol goes in front of it. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot
Correct Correct
Section 3 Lesson 3

(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)
19. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
20. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. The “Other” subtype is mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
22. When creating entities you must follow these rules: (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
Name them in Plural
Name them in Singular (*)
Exclude Attributes
Include Attributes (*)
Correct Correct
23. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct

Section 4 Lesson 2
(Answer all questions in this section)
24. A new system would have a mixture of both Procedural and Structural
Business Rules as part of the documentation of that new system. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
25. Why is it important to identify and document structural rules? Mark for
Review
(1) Points
Ensures we know what data to store and how that data works together. (*)
Ensures nothing. There is no benefits to be gained from documenting your Structural Business
Rules. We need to concentrate on the Procedural Business Rules only.
Ensures we know what Information to store and how that Information works together.
All of the Above.
Incorrect Incorrect. Refer to Section 4
26. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator handle them
No, but you just explain them to the users so they can enforce them
Yes, all constraints must be modeled and shown on the ER diagram
No, so you should list them on a separate document to be handled programmatically (*)
Correct Correct

27. “Only teachers may supervise exams” is an example of which of the following?
Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. A Diamond on a relationship indicates the Relationship as Non-Tranferrable.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 5 Lesson 2
(Answer all questions in this section)
29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT

TEACHER and SUBJECT AREA (*)
Correct Correct
30. A relationship from an entity back to itself is called a ___________
relationship. Mark for Review
(1) Points
Mandatory
Recursive (*)
Many to Many Optional
Transferrable
Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
32. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)
33.
All entities must be given a new artificial UID. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. Until all attributes are single-valued, the database model is said to be: Mark
for Review
(1) Points
Normalized
Not Normalized (*)
1st Normal Form
2nd Normal Form
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT Mark
for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it

Sometimes
No – it breaks the Normalization rules (*)
Correct Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
37. Arcs are Mandatory in Data modelling. All ERD’s must have at least one Arc.
True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
38. Which of the following would best be represented by an arc? Mark for
Review
(1) Points
TEACHER (Female, Bob)
DELIVERY ADDRESS ( Home, Office) (*)
PARENT (Girl, Bob)

STUDENT (Grade A student, Average Student)
Correct Correct
39. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
40. All relationships participating in an arc must be mandatory. True or False?
Mark for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
32. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review

(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)
33.
All entities must be given a new artificial UID. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. Until all attributes are single-valued, the database model is said to be: Mark
for Review
(1) Points
Normalized
Not Normalized (*)
1st Normal Form
2nd Normal Form
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT Mark

for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it
Sometimes
No – it breaks the Normalization rules (*)
Correct Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
37. Arcs are Mandatory in Data modelling. All ERD’s must have at least one Arc.
True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
38. Which of the following would best be represented by an arc? Mark for
Review
(1) Points
TEACHER (Female, Bob)

DELIVERY ADDRESS ( Home, Office) (*)
PARENT (Girl, Bob)
STUDENT (Grade A student, Average Student)
Correct Correct
39. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
40. All relationships participating in an arc must be mandatory. True or False?
Mark for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True

False (*)
Correct Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. Which of the following scenarios should be modeled so that historical data is
kept? (Choose two) Mark for Review
(1) Points
(Choose all correct answers)
BABY and AGE
CUSTOMER and PAYMENTS (*)
TEACHER and AGE
CUSTOMER and ORDERS (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points

True (*)
False
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 10
46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
47. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct

48. What do users of a system without the concept of time loose? Mark for
Review
(1) Points
Journalling becomes much easier.
Journalling becomes slightly harder.
The ability to track data over time. (*)
Nothing is lost if a system does not track time.
Incorrect Incorrect. Refer to Section 10
Section 10 Lesson 2
(Answer all questions in this section)
49. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)
Incorrect Incorrect. Refer to Section 10
50. All systems must include functionality to provide logging or journaling in
conceptual data models. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 2 Lesson 2
(Answer all questions in this section)
11. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct Correct
12. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
13. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)

Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct Correct
Section 3 Lesson 1
(Answer all questions in this section)
14. In a business that sells pet food choose the best relationship name between
FOOD TYPE and ANIMAL (e.g. dog, horse or cat). (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Each FOOD TYPE must be suitable for one or more ANIMALs. (*)
Each ANIMAL must be the seller of one or more FOOD TYPES.
Each FOOD TYPE may be made from one or more ANIMALs.
Each FOOD TYPE may be given to one or more ANIMALs. (*)
Correct Correct
15.
Relationship Degree/Cardinality is important. True or False?
Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points

Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)
Correct Correct
17. All the Attributes in a system are just written on the ERD, and they all go in the
Top Left Hand Corner of the paper. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)
19. Which of the following is true about subtypes? Mark for Review
(1) Points

One instance may belong to two subtypes of the same supertype.
Subtypes must be mutually exclusive. (*)
Subtypes must not be mutually exclusive.
Subtype entities may not have relationships to the other subtype entities, only the supertype
itself.
Correct Correct
20. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. The main subject areas taught by the Oracle Academy are: Mark for
Review
(1) Points
Computer Repairs
Database performance tuning.
Data Modeling, SQL and PL/SQL (*)
Systems programming and computer architecture
Correct Correct

Section 1 Lesson 2
(Answer all questions in this section)
2. What is the difference between “information” and “data”? Mark for
Review
(1) Points
Data is held and understood only by Users
Information is held and understood only by users
Information and data have no differences – they are two words for the same thing
Data turns into information when it is stored in a database and accessed by systems and
users (*)
Correct Correct
3.
Information which was gained from data is the same as: (Choose Two)
Mark for Review
(1) Points
(Choose all correct answers)
Knowledge (*)
Raw Materials
Intelligence (*)
There is no difference between data and information.
Correct Correct
Section 1 Lesson 3
(Answer all questions in this section)
4. The first step in system development is to document the requirements. Why?
Mark for Review
(1) Points
Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)

It allows application development to be conducted without having to consider database design.
It keeps businesses honest.
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Oracle Database Software provides which of the following functionality?
(Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Graphical User Interface (*)
Internet Browser
Server (*)
Operating Systems
Incorrect Incorrect. Refer to Section 1.
6. Databases were invented in 1989. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 2 Lesson 2
(Answer all questions in this section)
7. The entity/relationship model is created before the physical database design
model. True or False? Mark for Review
(1) Points

True (*)
False
Correct Correct
8. Volatile entities have special requirements and need special attention when
you are doing data modelling. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
9. An entity is instantiated as a ? Mark for Review
(1) Points
experience
instance
table (*)
none of the above
Correct Correct
10. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Are Required. The data model is not complete until all entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required

You may create more than one Primary Unique Identifier for an entity
Correct Correct
Page 1 of 5 Next Summary
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
23. A Supertype can have only one subtype. True or False? Mark for
Review
(1) Points
True

False (*)
Correct Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. A new system would have a mixture of both Procedural and Structural
Business Rules as part of the documentation of that new system. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
25. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct
26. “Only teachers may supervise exams” is an example of which of the following?
Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity

A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct
27. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator handle them
No, but you just explain them to the users so they can enforce them
Yes, all constraints must be modeled and shown on the ER diagram
No, so you should list them on a separate document to be handled programmatically (*)
Correct Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. Transferable relationships can only be mandatory, not optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 5 Lesson 2
(Answer all questions in this section)
29. A relationship from an entity back to itself is called a ___________
relationship. Mark for Review
(1) Points

Mandatory
Recursive (*)
Many to Many Optional
Transferrable
Correct Correct
30. If two entities have two relationships between them, these relationships can
be either __________ or __________? Mark for Review
(1) Points
Redundant or Required (*)
Replicated or Required
Resourced and Really Good
Redundant and Replicated
Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. What uncommon relationship is described by the statements: “Each DNA
SAMPLE may be taken from one and only one PERSON and each PERSON may provide one and
only one DNA SAMPLE” Mark for Review
(1) Points
One to Many Optional
One to Many Mandatory
One to One Optional (*)

Many to Many Mandatory
Correct Correct
32. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)
33.
All entities must be given a new artificial UID. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. When data is stored in one place in a database, the database conforms to the
rules of ___________. Mark for Review
(1) Points
Normality
Reduction
Normalization (*)
Multiplication

Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Any Non-UID must be dependant on the entire UID. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. Which of the following would best be represented by an arc? Mark for
Review
(1) Points
TEACHER (Female, Bob)
DELIVERY ADDRESS ( Home, Office) (*)
PARENT (Girl, Bob)
STUDENT (Grade A student, Average Student)
Correct Correct
37. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?

Mark for Review
(1) Points
True (*)
False
Correct Correct
38. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct Correct
39. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct
40. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points

True (*)
False
Correct Correct
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Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)
41. A particular problem may be solved using either a Recursive Realtionship or a
Hierachy, though not at the same time. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. Which of the following scenarios should be modeled so that historical data is
kept? (Choose two) Mark for Review
(1) Points
(Choose all correct answers)
BABY and AGE
CUSTOMER and PAYMENTS (*)
TEACHER and AGE
CUSTOMER and ORDERS (*)
Correct Correct

Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public speaking?
(Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical
information (*)
Being enthusiastic
All of the Above
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)

Incorrect Incorrect. Refer to Section 10
46. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
47. Which of the following would be a logical constraint when modeling time for a
City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
If you are doing a system for any French City, you would need security clearance
You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
Incorrect Incorrect. Refer to Section 10
48. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct

Section 10 Lesson 2
(Answer all questions in this section)
49. Which of the following is a logical constraint, that could result from considering
how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Time.
Correct Correct
50. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)
Correct Correct
Previous Page 5 of 5 Summary
Test: Mid Term Exam – Database Design

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. The market for IT professionals is still increasing and will continue to do so in
the future, as the world gets ever more dependent on computer systems. True or False? Mark
for Review
(1) Points
True (*)
False
Correct
Section 1 Lesson 2
(Answer all questions in this section)
2. Information which was gained from data is the same as: (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
Knowledge (*)

Raw Materials
Intelligence (*)
There is no difference between data and information.
Correct
3. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review
(1) Points
Data (*)
Information
Both
Neither
Correct
Section 1 Lesson 3
(Answer all questions in this section)

4. The first step in system development is to document the requirements. Why?
Mark for Review
(1) Points
Wrong. A blueprint for the database design is not needed.
We can just start coding straight away.
It clarifies what a business wants to accomplish, and provides
measures for deciding if the system delivers all that is required. (*)
It allows application development to be conducted without
having to consider database design.
It keeps businesses honest.
Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Databases perform these functions…. Mark for Review
(1) Points
Running multiple applications on multiple client-servers

Providing integrated software on fast processing servers
Providing software running on a variety of platforms and
configurations allowing companies a structured way to access and manage their data (*)
They run purely as client-based software on personal
computers
Correct
6. Software cannot operate without Hardware. True or False? Mark for
Review
(1) Points
True (*)
False
Correct
Section 2 Lesson 2
(Answer all questions in this section)

7. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
False
Correct
8. In a physical data model, a relationship is represented as a? Mark for
Review
(1) Points
Column
Row
Instance
Foreign Key (*)
Correct

9. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner,
Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary,
Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation,
Salary
Correct
10. The entity/relationship model is created before the physical database design
model. True or False? Mark for Review
(1) Points
True (*)
False

Correct
est: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 2 Lesson 2
(Answer all questions in this section)
11. All of the following are examples of ENTITY: Instance except two. Select the
answers that are ENTITY: Instance. (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
TRANSPORTATION METHOD: Car (*)
ANIMAL: Dog (*)
MEAT PRODUCT: Lettuce
BODY PART: Larry Ellison
Correct

12. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False
Correct
13. Volatile entities have special requirements and need special attention when
you are doing data modelling. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 3 Lesson 1

(Answer all questions in this section)
14. Relationships represents something of significance to the business? True or
False? Mark for Review
(1) Points
True (*)
False
Correct
15. Which of the following are valid relationship degrees? (Choose two) Mark
for Review
(1) Points
(Choose all correct answers)
1:1 (*)
1:M (*)
1:O
O:O

Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot
Correct
17. Entity Boxes are drawn with 90 degree angles, also known as Hard Boxes.
True or False? Mark for Review
(1) Points

True
False (*)
Correct
Section 3 Lesson 3
(Answer all questions in this section)
18. When reading an ERD including Relationships you are said to be speaking:
Mark for Review
(1) Points
Relationship-ish
Gibberish
ERDish (*)
Entity-ish
Correct

Section 4 Lesson 1
(Answer all questions in this section)
19. All instances of a subtypes may be an instance of the supertype but does not
have to. True or False? Mark for Review
(1) Points
True
False (*)
Correct
20. Which of the following is true about subtypes? Mark for Review
(1) Points
One instance may belong to two subtypes of the same
supertype.
Subtypes must be mutually exclusive. (*)
Subtypes must not be mutually exclusive.

Subtype entities may not have relationships to the other
subtype entities, only the supertype itself.
Correct
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. When creating entities you must follow these rules: (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
Name them in Plural
Name them in Singular (*)
Exclude Attributes
Include Attributes (*)

Correct
22. The “Other” subtype is mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct
23. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct

Section 4 Lesson 2
(Answer all questions in this section)
24. Why is it important to identify and document structural rules? Mark for
Review
(1) Points
Ensures we know what data to store and how that data
works together. (*)
Ensures nothing. There is no benefits to be gained from
documenting your Structural Business Rules. We need to concentrate on the Procedural Business
Rules only.
Ensures we know what Information to store and how that
Information works together.
All of the Above.
Correct
25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity

A structural business rule
An attribute that is not be inherited from the PERSON
supertype and is unique to the TEACHER subtype
Correct
26. Business rules are important to data modelers. True or False? Mark for
Review
(1) Points
True (*)
False
Correct
27. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.

We need to trust our customers, and we know they will pay
some day.
Hiring a programmer to create additional programming code
to verify no goods are shipped until the account has been settled in full. (*)
Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. If a relationship can NOT be moved between instances of the entities it
connects, it is said to be: Mark for Review
(1) Points
Mandatory
Optional
Transferrable
Non-Transferable (*)

Correct
Section 5 Lesson 2
(Answer all questions in this section)
29. What uncommon relationship is described by the statements: “Each DNA
SAMPLE may be taken from one and only one PERSON and each PERSON may provide one and only
one DNA SAMPLE” Mark for Review
(1) Points
One to Many Optional
One to Many Mandatory
One to One Optional (*)
Many to Many Mandatory
Correct
30. If two entities have two relationships between them, these relationships can
be either __________ or __________? Mark for Review
(1) Points

Redundant or Required (*)
Replicated or Required
Resourced and Really Good
Redundant and Replicated
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct

32. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. People are not born with “numbers,” but a lot of systems assign student
numbers, customer IDs, etc. A shoe has a color, a size, a style, but may not have a descriptive
“number”. So, to be able to uniquely and efficiently identify one instance of the entity SHOE, a/an
______________ UID can be created. Mark for Review
(1) Points
artificial (*)
unrealistic
structured
identification

Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. An entity without repeated values is said to be on 1st Normal Form. True or
False? Mark for Review
(1) Points
True (*)
False
Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. When is an entity in 2nd Normal Form? Mark for Review

(1) Points
When all non-UID attributes are dependent upon the entire
UID. (*)
When no attritibutes are mutually independant and fully
independent on the primary key.
When no attritibutes are mutually independent and all are
fully dependent on the primary key.
None of the Above.
Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City

* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False? Mark for Review
(1) Points
True (*)
False
Correct
37. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct
38. All relationships participating in an arc must be mandatory. True or False?
Mark for Review

(1) Points
True
False (*)
Correct
39. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct
40. Which of the following would best be represented by an arc? Mark for
Review
(1) Points
TEACHER (Female, Bob)

DELIVERY ADDRESS ( Home, Office) (*)
PARENT (Girl, Bob)
STUDENT (Grade A student, Average Student)
Number for Book (*)
Date of birth for Baby
Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. If Audit trail attributes are added to an entity they must be in the entities
they are auditing. True or False? Mark for Review
(1) Points
True (*)
False
Correct

Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points

True (*)
False
Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct
46. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points

True
False (*)
Correct
47. Which of the following would be a logical constraint when modeling time for
a City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are
placed in, if the borders of a country change. (*)
If you are doing a system for any French City, you would need
security clearance
You need a constant record of cities because they are still
cities, even if leadership changes over time, e.g. they get a new Mayor
Correct

48. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. You are doing a data model for a computer sales company, where the price
of postage is dependant on what day of the week goods are shipped. So shipping is more expensive if
the customer wants a delivery to take place on a Saturday or Sunday. What would be the best way to
model this? Mark for Review
(1) Points
Use a Delivery Day entity, which holds prices against week
days, and ensure the we also have an attribute for the Requested Delivery Day in the Order Entity. (*)
Email current price to all employees whenever the prices
change.

Update the prices in the system, print out the current prices
when they change and pin them on the company noticeboard
Allow them to enter whatever delivery charge they want.
Correct
50. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York
Stock Exchange to be notified of this information.
To allow the sales people to determine when the shared
were bought and therefore at what price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you
need to know the time of purchase (*)
Correct

Skip navigation elements to page contents
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a
correct answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. Once you have learned how to write programs and build systems,
you no longer need any input or involvement from any users, as you are perfectly capable
of delivering the systems the business needs and wants. Mark for Review
(1) Points
True. All that perfect systems need are correct programs.
False. Business requirements can and will change. For instance new legal
requirements may arise. (*)
True. All users do is delay systems delivery with their forever changing minds
and new requirements.
True. Users never know what they want anyway, so building systems are best left
to the professionals.
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with
transaction details of which student borrows which books. Is a record of one student
borrowing one book Data or Information? Mark for Review
(1) Points
Data (*)
Information
Both

Neither
Correct Correct
3. Consider your school library. It will have a database with
transaction details of which student borrows which books. Is details of the total number
of books out on loan in one given month Data or Information? Mark for Review
(1) Points
Data
Information (*)
Both
Neither
Correct Correct
Section 1 Lesson 3
(Answer all questions in this section)
4. The first step in system development is to document the
requirements. Why? Mark for Review
(1) Points
Wrong. A blueprint for the database design is not needed. We can just start coding
straight away.
It clarifies what a business wants to accomplish, and provides measures for
deciding if the system delivers all that is required. (*)

It allows application development to be conducted without having to consider
database design.
It keeps businesses honest.
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Businesses involved in any of the following typically use databases
to handle their data: Finance, Logistics, Commerce, Procurement and Distribution? True
or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
6. Oracle Database Software provides which of the following
functionality? (Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Graphical User Interface (*)
Internet Browser
Server (*)

Operating Systems
Incorrect Incorrect. Refer to Section 1.
Section 2 Lesson 2
(Answer all questions in this section)
7. All of the following could be attributes of an ENTITY called
PERSON except one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight
Gender
Natacha Hansen (*)
Correct Correct
8. An entity can have many Unique Identifiers. True or False?
Mark for Review
(1) Points
True (*)
False

Correct Correct
9. Relationship names are usually verbs. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
10. All of the following would be instances of the entity ANIMAL
SPECIES except which? Mark for Review
(1) Points
Dog
Bird
Elephant
Leaf (*)
Correct Correct
Page 1 of 5 Next Summary
Section 2 Lesson 2
(Answer all questions in this section)

11. A/an _________ is a picture of all the information that will form
the basis for the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct Correct
12. Which of the following entities most likely contains valid
attributes? (Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct Correct
13. Which of the following statements about relationships are true?
(Choose Two) Mark for Review

(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Incorrect Incorrect. Refer to Section 2
Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Degree/Cardinality is important. True or False?
Mark for Review
(1) Points
True (*)
False
Correct Correct
15.
Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)
Correct Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot

Incorrect Incorrect. Refer to Section 3.
Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True
or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)
19. You can only create relationships to a Supertype, not to a Subtype.
True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
20. A Supertype can have only one subtype. True or False? Mark
for Review
(1) Points

True
False (*)
Correct Correct
Previous Page 2 of 5 Next Summary
Section 4 Lesson 1
(Answer all questions in this section)
21. All instances of the supertype must be an instance of one of the
subtypes. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
22. A supertype can only have two subtypes and no more. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct

23. Which of the following are suitable Entity names? (Choose Two)
Mark for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have
completely paid any outstanding balances on their account” is best enforced by: Mark
for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods
are shipped until the account has been settled in full. (*)

Correct Correct
25. “Only teachers may supervise exams” is an example of which of
the following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to
the TEACHER subtype
Correct Correct
26. How would you model a business rule that states that girls and
boys may not attend classes together? Mark for Review
(1) Points
Use a supertype
Use two subtypes with relationships from class to student gender (*)
Make the attribute Gender mandatory
You cannot model this. You need to document it.
Correct Correct

27. Why is it important to identify and document structural rules?
Mark for Review
(1) Points
Ensures we know what data to store and how that data works together. (*)
Ensures nothing. There is no benefits to be gained from documenting your
Structural Business Rules. We need to concentrate on the Procedural Business Rules
only.
Ensures we know what Information to store and how that Information works
together.
All of the Above.
Incorrect Incorrect. Refer to Section 4
Section 5 Lesson 1
(Answer all questions in this section)
28. Transferable relationships can only be mandatory, not optional.
True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 5 Lesson 2

(Answer all questions in this section)
29. Which of the following pairs of entities is most likely to be
modeled as a M:M relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect Incorrect. Refer to Section 5.
30. If two entities have two relationships between them, these
relationships can be either __________ or __________? Mark for Review
(1) Points
Redundant or Required (*)
Replicated or Required
Resourced and Really Good
Redundant and Replicated
Correct Correct
Previous Page 3 of 5 Next Summary

Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
32. Many to many relationships must be left in the Model. It is
important to have them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. The first UID for an entity is called the Primary UID, the second is
called Secondary UID and so on. Mark for Review
(1) Points
Yes, this is the way UID’s are named. (*)
No, it is not possible to have more than one UID for an Entity.

Yes, but then it stops. No entities can have more than two UID’s.
No, each Entity can only have one UID, the secondary one.
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. An entity without repeated values is said to be on 1st Normal
Form. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT
Mark for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it

Sometimes
No – it breaks the Normalization rules (*)
Incorrect Incorrect. Refer to Section 6
Section 7 Lesson 1
(Answer all questions in this section)
36. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on
another non-UID attribute). True or False?
Mark for Review
(1) Points
True (*)
False
Correct Correct
37. An arc can be modelled as Supertype and Subtypes. True or False?
Mark for Review
(1) Points
True (*)

False
Incorrect Incorrect. Refer to Section 7
38. No parts of a UID are mandatory. True or False? Mark for
Review
(1) Points
True
False (*)
Correct Correct
39. Arcs are used to visually represent _________ between two or
more relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct Correct

40. Which of the following is NOT a relationship type? Mark for
Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct
Previous Page 4 of 5 Next Summary
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or
False? Mark for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)

42. Modeling historical data can produce a unique identifier that
always excludes dates. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on
track and delivers within the timescales set out for the project. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Your apperance at a presentation is important. You need to look
smart and presentable. True or False?Mark for Review
(1) Points
True (*)

False
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates,
then End Dates becomes Mandatory. For each Start Date attribute you create, you MUST
create an End Date attribute and it must be mandatory. True or False? Mark for
Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 10
46. Which of the following would be a logical constraint when
modeling time for a City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the
borders of a country change. (*)
If you are doing a system for any French City, you would need security clearance
You need a constant record of cities because they are still cities, even if leadership
changes over time, e.g. they get a new Mayor

Correct Correct
47. There is only one way to model time in a Data Model. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
48. All systems must have an entity called WEEK with a holiday
attribute, so you know when to give your employees a holiday. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Which of the following is a logical constraint, that could result
from considering how time impacts data storage? Mark for Review
(1) Points

An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee
record at the Start Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Time.
Correct Correct
50. Why would you want to model a time component when designing
a system that lets people buy shares via the Internet? (Choose Two) Mark for
Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to
be notified of this information.
To allow the sales people to determine when the shared were bought and therefore
at what price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the
time of purchase (*)
Correct Correct
Previous Page 5 of 5 Summary

The market for IT professionals is still increasing and will continue to do so in the future, as the world
gets ever more dependent on computer systems. True or False?
· True (*)
· False
Consider your school library. It will have a database with transaction details of which student
borrows which books. Is a record of one student borrowing one book Data or Information?
· Data (*)
· Information
· Both
· Neither
Information which was gained from data is the same as: (Choose Two)
· Knowledge (*)
· Raw Materials
· Intelligence (*)
· There is no difference between data and information.
The first step in system development is to document the requirements. Why?
· Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
· It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)
· It allows application development to be conducted without having to consider database
design.
· It keeps businesses honest.
Which of the following are types of databases?
· Hierarchical (*)
· Relational (*)
· SQL
· Network (*)
Databases perform these functions….
· Running multiple applications on multiple client-servers
· Providing integrated software on fast processing servers
· Providing software running on a variety of platforms and configurations allowing companies
a structured way to access and manage their data (*)
· They run purely as client-based software on personal computers
In a physical data model, a relationship is represented as a?
· Column

· Row
· Instance
· Foreign Key (*)
Which of the following statements about relationships are true? (Choose Two)
· They become Foreign Keys in the database. (*)
· They Must be Mandatory to be created in the database.
· They can be either mandatory or optional. (*)
· They must exist between two different Entities.
Which of the following entities most likely contains valid attributes? (Choose two)
· Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
· Entity: Pet. Attributes: Name, Birthdate, Owner (*)
· Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
· Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
All of the following would be instances of the entity ANIMAL SPECIES except which?
· Dog
· Bird
· Elephant
· Leaf (*)
.An entity can have many Unique Identifiers. True or False?
· True (*)
· False
The entity/relationship model is created before the physical database design model. True or False?
· True (*)
· False
All of the following are examples of ENTITY: Instance except two. Select the answers that are ENTITY:
Instance. (Choose Two)
· TRANSPORTATION METHOD: Car (*)
· ANIMAL: Dog (*)
· MEAT PRODUCT: Lettuce
· BODY PART: Larry Ellison
One Relationship can be both mandatory and optional at different ends. True or False?
· True (*)
· False
Which of the following are valid relationship degrees? (Choose two)

· 1:1 (*)
· 1:M (*)
· 1:O
· O:O
All the Attributes in a system are just written on the ERD, and they all go in the Top Left Hand Corner
of the paper. True or False?
· True
· False (*)
Entity names are always singular. True or False?
· True (*)
· False
Matrix Diagrams are mandatory when doing data modelling. True or False?
· True
· False (*)
Which of the following is true about subtypes?
· One instance may belong to two subtypes of the same supertype.
· Subtypes must be mutually exclusive. (*)
· Subtypes must not be mutually exclusive.
· Subtype entities may not have relationships to the other subtype entities, only the supertype
itself.
A Supertype can have only one subtype. True or False?
· True
· False (*)
A supertype can only have two subtypes and no more. True or False?
· True
· False (*)
You can only create relationships to a Supertype, not to a Subtype. True or False?
· True
· False (*)
When creating entities you must follow these rules: (Choose Two)
· Name them in Plural
· Name them in Singular (*)
· Exclude Attributes
· Include Attributes (*)

How would you model a business rule that states that girls and boys may not attend classes
together?
· Use a supertype
· Use two subtypes with relationships from class to student gender (*)
· Make the attribute Gender mandatory
· You cannot model this. You need to document it.
Can all constraints be modeled on an ER diagram?
· No, in which case you should let the database administrator handle them
· No, but you just explain them to the users so they can enforce them
· Yes, all constraints must be modeled and shown on the ER diagram
· No, so you should list them on a separate document to be handled programmatically (*)
“Only teachers may supervise exams” is an example of which of the following?
· A procedural business rule (*)
· An attribute that should be stored on the PERSON entity
· A structural business rule
· An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Why is it important to identify and document structural rules?
· Ensures we know what data to store and how that data works together. (*)
· Ensures nothing. There is no benefits to be gained from documenting your Structural
Business Rules. We need to concentrate on the Procedural Business Rules only.
· Ensures we know what Information to store and how that Information works together.
· All of the Above.
If a relationship can NOT be moved between instances of the entities it connects, it is said to be:
· Mandatory
· Optional
· Transferrable
· Non-Transferable (*)
Many to many relationships must be left in the Model. It is important to have them documented as
M-M. True or False?
· True
· False (*)
What uncommon relationship is described by the statements: “Each DNA SAMPLE may be taken from
one and only one PERSON and each PERSON may provide one and only one DNA SAMPLE”
· One to Many Optional
· One to Many Mandatory

· One to One Optional (*)
· Many to Many Mandatory
Relationships can be Redundant. True or False?
· True (*)
· False
A relationship from an entity back to itself is called a ___________ relationship.
· Mandatory
· Recursive (*)
· Many to Many Optional
· Transferrable
All entities must be given a new artificial UID. True or False?
· True
· False (*)
When data is stored in one place in a database, the database conforms to the rules of ___________.
· Normality
· Reduction
· Normalization (*)
· Multiplication
Would it be a good idea to model age as an attribute of STUDENT
· Yes
· Maybe it could stop us having to calculate someones age every time we need it
· Sometimes
· No – it breaks the Normalization rules (*)
Arcs are Mandatory in Data modelling. All ERD’s must have at least one Arc. True or False?
· True
· False (*)
Arcs are used to visually represent _________ between two or more relationships in an ERD.
· Sameness
· Differencies
· Exclusivity (*)
· An Arc is what Noah sailed on with all the animals.
An arc can be modelled as Supertype and Subtypes. True or False?
· True (*)
· False

No parts of a UID are mandatory. True or False?
· True
· False (*)
Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?
· True (*)
· False
A relationship can be both Recursive and Hierarchal at the same time. True or False?
· True
· False (*)
If Audit trail attributes are added to an entity they must be in the entities they are auditing. True or
False?
· True (*)
· False
Communication Skills, Team-working and Presentations skills are all important for Consultants. True
or False?
· True (*)
· False
Which of the following are NOT valid techniques for effective public speaking? (Choose Two)
· Whispering (*)
· Using specialist language and technical abbreviations when communicating technical
information (*)
· Being enthusiastic
· All of the Above

When you add the concept of time to your data model, your model becomes more complex. True or
False?
· True (*)
· False
Which of the following would be a logical constraint when modeling time for a City entity?
· People are born in the city and people die in the city.
· Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
· If you are doing a system for any French City, you would need security clearance
· You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
What do users of a system without the concept of time loose?
· Journalling becomes much easier.
· Journalling becomes slightly harder.
· The ability to track data over time. (*)
· Nothing is lost if a system does not track time.
If a system includes the concept of time, and it stores Start Dates, then End Dates becomes
Mandatory. For each Start Date attribute you create, you MUST create an End Date attribute and it
must be mandatory. True or False?
· True
· False (*)
Why would you want to model a time component when designing a system that lets people buy
shares via the Internet? (Choose Two)
· This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
· To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
· You would not want to model this, it is not important.
· The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)
All systems must include functionality to provide logging or journaling in conceptual data models.
True or False?
· True
· False (*)
The main subject areas taught by the Oracle Academy are:
· Computer Repairs

· Database performance tuning.
· Data Modeling, SQL and PL/SQL (*)
· Systems programming and computer architecture
Consider your school library. It will have a database with transaction details of which student
borrows which books. Is details of the total number of books out on loan in one given month Data or
Information?
· Data
· Information (*)
· Both
· Neither
Information which was gained from data is the same as: (Choose Two)
· Knowledge (*)
· Raw Materials
· Intelligence (*)
· There is no difference between data and information.
Databases are used in most countries and by most governments. Life, as we know it, would change
drastically if we no longer had access to databases. True or False?
· True (*)
· False
Incorrect. Refer to Section 1.
Section 1 Lesson 4
(Answer all questions in this section)
5. Which of the following are types of databases? Mark for Review
(1) Points

(Choose all correct answers)
Hierarchical (*)
Relational (*)
SQL
Network (*)
Correct
6. Databases perform these functions…. Mark for Review
(1) Points
Running multiple applications on multiple client-servers
Providing integrated software on fast processing servers
Providing software running on a variety of platforms and
configurations allowing companies a structured way to access and manage their data (*)
They run purely as client-based software on personal
computers

Correct
Section 2 Lesson 2
(Answer all questions in this section)
7. In a physical data model, a relationship is represented as a? Mark for
Review
(1) Points
Column
Row
Instance
Foreign Key (*)
Correct
8. An entity is instantiated as a ? Mark for Review
(1) Points
experience

instance
table (*)
none of the above
Correct
9. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct

10. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner,
Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary,
Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation,
Salary
ew your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.
Section 2 Lesson 2
(Answer all questions in this section)
11. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points
Dog
Bird
Elephant

Leaf (*)
Correct
12. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Correct
13. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points

(Choose all correct answers)
Are Required. The data model is not complete until all
entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required
You may create more than one Primary Unique Identifier for
an entity
Correct
Section 3 Lesson 1
(Answer all questions in this section)
14. Which of the following are valid relationship degrees? (Choose two) Mark
for Review
(1) Points
(Choose all correct answers)
1:1 (*)

1:M (*)
1:O
O:O
Correct
15. Relationships represents something of significance to the business? True or
False? Mark for Review
(1) Points
True (*)
False
Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review

(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)
Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot
Incorrect. Refer to Section 3.

Section 3 Lesson 3
(Answer all questions in this section)
18. Two entities can ONLY have one relationship between them. True or False?
Mark for Review
(1) Points
True
False (*)
Incorrect. Refer to Section 3
Section 4 Lesson 1
(Answer all questions in this section)
19. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points

True
False (*)
Correct
20. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. Which of the following is true about subtypes? Mark for Review
(1) Points

One instance may belong to two subtypes of the same
supertype.
Subtypes must be mutually exclusive. (*)
Subtypes must not be mutually exclusive.
Subtype entities may not have relationships to the other
subtype entities, only the supertype itself.
Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)
Correct
23. All ER diagrams must have one of each of the following: (Choose two) Mark
for Review

(1) Points
(Choose all correct answers)
One or more Entities (*)
Relationships between entities (*)
Arcs
At least one supertype and subtype
Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator
handle them

No, but you just explain them to the users so they can
enforce them
Yes, all constraints must be modeled and shown on the ER
diagram
No, so you should list them on a separate document to be
handled programmatically (*)
Correct
25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON
supertype and is unique to the TEACHER subtype
Correct

26. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay
some day.
Hiring a programmer to create additional programming code
to verify no goods are shipped until the account has been settled in full. (*)
Correct
27. How would you model a business rule that states that girls and boys may not
attend classes together? Mark for Review
(1) Points
Use a supertype
Use two subtypes with relationships from class to student
gender (*)
Make the attribute Gender mandatory

You cannot model this. You need to document it.
Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. If a relationship can NOT be moved between instances of the entities it
connects, it is said to be: Mark for Review
(1) Points
Mandatory
Optional
Transferrable
Non-Transferable (*)
Correct

Section 5 Lesson 2
(Answer all questions in this section)
29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect. Refer to Section 5.
30. A relationship from an entity back to itself is called a ___________
relationship. Mark for Review
(1) Points
Mandatory
Recursive (*)

Many to Many Optional
Transferrable
Correct
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. How do you include a relationship as part of the UID for an entity? Mark
for Review
(1) Points
By barring the relationship in question (*)
By reporting it in an external document
By including the UID from the parent entity as an attribute in
the entity
You cannot model that.

Correct
32. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. A unique identifier must be made up of more than one attribute. True or
False? Mark for Review
(1) Points
True
False (*)

Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. Until all attributes are single-valued, the database model is said to be: Mark
for Review
(1) Points
Normalized
Not Normalized (*)
1st Normal Form
2nd Normal Form
Incorrect. Refer to Section 5
Section 6 Lesson 3

(Answer all questions in this section)
35. Any Non-UID must be dependant on the entire UID. True or False? Mark
for Review
(1) Points
True (*)
False
Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. Primary UIDs are: Mark for Review
(1) Points
Something that each Entity should have, but is not
mandatory (*)
Useful as an alternative means identifying instances of an
entity, independent of their datatype
Mandatory in data modeling

Always comprised of numbers
Incorrect. Refer to Section 7
37. All relationships participating in an arc must be mandatory. True or False?
Mark for Review
(1) Points
True
False (*)
Incorrect. Refer to Section 7
38. Arcs are Mandatory in Data modelling. All ERD’s must have at least one Arc.
True or False? Mark for Review
(1) Points
True
False (*)

Correct
39. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct
40. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Test: Mid Term Exam – Database Design

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True

False (*)
Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Communication Skills, Team-working and Presentations skills are all
important for Consultants. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 8 Lesson 2
(Answer all questions in this section)

44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)
Correct

46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False
Correct
47. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False
Correct
48. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points

True
False (*)
Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York
Stock Exchange to be notified of this information.
To allow the sales people to determine when the shared
were bought and therefore at what price. (*)
You would not want to model this, it is not important.

The price of shares fluctuates and for determining price, you
need to know the time of purchase (*)
Correct
50. You are doing a data model for a computer sales company, where the price
of postage is dependant on what day of the week goods are shipped. So shipping is more expensive if
the customer wants a delivery to take place on a Saturday or Sunday. What would be the best way to
model this? Mark for Review
(1) Points
Use a Delivery Day entity, which holds prices against week
days, and ensure the we also have an attribute for the Requested Delivery Day in the Order Entity. (*)
Email current price to all employees whenever the prices
change.
Update the prices in the system, print out the current prices
when they change and pin them on the company noticeboard
Allow them to enter whatever delivery charge they want.
Correct
Skip navigation elements to page contents
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1

(Answer all questions in this section)
1. Once you have learned how to write programs and build systems, you no
longer need any input or involvement from any users, as you are perfectly capable of delivering the
systems the business needs and wants. Mark for Review
(1) Points
True. All that perfect systems need are correct programs.
False. Business requirements can and will change. For instance new legal requirements may
arise. (*)
True. All users do is delay systems delivery with their forever changing minds and new
requirements.
True. Users never know what they want anyway, so building systems are best left to the
professionals.
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review

(1) Points
Data (*)
Information
Both
Neither
Correct Correct
3. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is details of the total number of books out on loan in one
given month Data or Information? Mark for Review
(1) Points
Data

Information (*)
Both
Neither
Correct Correct
Section 1 Lesson 3
(Answer all questions in this section)
4. The first step in system development is to document the requirements. Why?
Mark for Review
(1) Points
Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)

It allows application development to be conducted without having to consider database
design.
It keeps businesses honest.
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Businesses involved in any of the following typically use databases to handle
their data: Finance, Logistics, Commerce, Procurement and Distribution? True or False? Mark
for Review
(1) Points
True (*)
False

Correct Correct
6. Oracle Database Software provides which of the following functionality?
(Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Graphical User Interface (*)
Internet Browser
Server (*)
Operating Systems
Incorrect Incorrect. Refer to Section 1.
Section 2 Lesson 2

(Answer all questions in this section)
7. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight
Gender
Natacha Hansen (*)
Correct Correct
8. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points

True (*)
False
Correct Correct
9. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
10. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points

Dog
Bird
Elephant
Leaf (*)
Correct Correct
Page 1 of 5 Next Summary
Section 2 Lesson 2
(Answer all questions in this section)
11. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points

ERD (*)
Process
Table
Attribute
Correct Correct
12. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)

Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct Correct
13. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.

Incorrect Incorrect. Refer to Section 2
Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Degree/Cardinality is important. True or False?
Mark for Review
(1) Points
True (*)
False
Correct Correct
15.
Relationship Names are optional. True or False?

Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)

Correct Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot
Incorrect Incorrect. Refer to Section 3.

Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)
19. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True

False (*)
Correct Correct
20. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Previous Page 2 of 5 Next Summary
Section 4 Lesson 1
(Answer all questions in this section)

21. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)

Correct Correct
23. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct Correct
Section 4 Lesson 2

(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct
25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points

A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct
26. How would you model a business rule that states that girls and boys may not
attend classes together? Mark for Review
(1) Points
Use a supertype
Use two subtypes with relationships from class to student gender (*)

Make the attribute Gender mandatory
You cannot model this. You need to document it.
Correct Correct
27. Why is it important to identify and document structural rules? Mark for
Review
(1) Points
Ensures we know what data to store and how that data works together. (*)
Ensures nothing. There is no benefits to be gained from documenting your Structural
Business Rules. We need to concentrate on the Procedural Business Rules only.
Ensures we know what Information to store and how that Information works together.
All of the Above.

Incorrect Incorrect. Refer to Section 4
Section 5 Lesson 1
(Answer all questions in this section)
28. Transferable relationships can only be mandatory, not optional. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 5 Lesson 2
(Answer all questions in this section)

29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect Incorrect. Refer to Section 5.
30. If two entities have two relationships between them, these relationships can
be either __________ or __________? Mark for Review
(1) Points
Redundant or Required (*)

Replicated or Required
Resourced and Really Good
Redundant and Replicated
Correct Correct
Previous Page 3 of 5 Next Summary
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
32. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. The first UID for an entity is called the Primary UID, the second is called
Secondary UID and so on. Mark for Review
(1) Points

Yes, this is the way UID’s are named. (*)
No, it is not possible to have more than one UID for an Entity.
Yes, but then it stops. No entities can have more than two UID’s.
No, each Entity can only have one UID, the secondary one.
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. An entity without repeated values is said to be on 1st Normal Form. True or
False? Mark for Review
(1) Points
True (*)

False
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT Mark
for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it
Sometimes
No – it breaks the Normalization rules (*)

Incorrect Incorrect. Refer to Section 6
Section 7 Lesson 1
(Answer all questions in this section)
36. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?
Mark for Review
(1) Points
True (*)

False
Correct Correct
37. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 7
38. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
39. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct Correct

40. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct
Previous Page 4 of 5 Next Summary
Section 7 Lesson 2
(Answer all questions in this section)

41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)

44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True

False (*)
Incorrect Incorrect. Refer to Section 10
46. Which of the following would be a logical constraint when modeling time for
a City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
If you are doing a system for any French City, you would need security clearance
You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
Correct Correct

47. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Time.
Correct Correct

50. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)
Correct Correct
11. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points

(Choose all correct answers)
Are Required. The data model is not complete until all entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required
You may create more than one Primary Unique Identifier for an entity
Correct Correct
12. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight

Gender
Natacha Hansen (*)
Correct Correct
13. Volatile entities have special requirements and need special attention when
you are doing data modelling. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct

Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
15. Relationships represents something of significance to the business? True or
False? Mark for Review
(1) Points
True (*)
False

Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. To identify an attribute as part of a unique identifier on an ER diagram, the #
symbol goes in front of it. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
17. Entity names are always singular. True or False? Mark for Review
(1) Points
True (*)

False
Correct Correct
Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct

Section 4 Lesson 1
(Answer all questions in this section)
19. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
20. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS

ANIMAL (*)
ANIMALS
DOG (*)
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 4 Lesson 1
(Answer all questions in this section)
21. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

22. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
23. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct

Section 4 Lesson 2
(Answer all questions in this section)
24. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct

25. A new system would have a mixture of both Procedural and Structural
Business Rules as part of the documentation of that new system. True or False? Mark for
Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 4
26. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator handle them
No, but you just explain them to the users so they can enforce them
Yes, all constraints must be modeled and shown on the ER diagram

No, so you should list them on a separate document to be handled programmatically (*)
Correct Correct
27. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct

Section 5 Lesson 1
(Answer all questions in this section)
28. If a relationship can NOT be moved between instances of the entities it
connects, it is said to be: Mark for Review
(1) Points
Mandatory
Optional
Transferrable
Non-Transferable (*)
Correct Correct

Section 5 Lesson 2
(Answer all questions in this section)
29. How do you include a relationship as part of the UID for an entity? Mark
for Review
(1) Points
By barring the relationship in question (*)
By reporting it in an external document
By including the UID from the parent entity as an attribute in the entity
You cannot model that.
Correct Correct
30. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points

CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
32. A relationship from an entity back to itself is called a ___________
relationship. Mark for Review
(1) Points
Mandatory
Recursive (*)
Many to Many Optional
Transferrable
Correct Correct
Section 6 Lesson 1
(Answer all questions in this section)

33.
All entities must be given a new artificial UID. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. Normalizing an Entity to 1st Normal Form is done by removing repeated or
redundant attributes. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. When is an entity in 2nd Normal Form? Mark for Review
(1) Points
When all non-UID attributes are dependent upon the entire UID. (*)
When no attritibutes are mutually independant and fully independent on the primary key.
When no attritibutes are mutually independent and all are fully dependent on the primary
key.
None of the Above.
Correct Correct

Section 7 Lesson 1
(Answer all questions in this section)
36. All relationships participating in an arc must be mandatory. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
37. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness

Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct Correct
38. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

39. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct
40. Primary UIDs are: Mark for Review
(1) Points
Something that each Entity should have, but is not mandatory (*)

Useful as an alternative means identifying instances of an entity, independent of their
datatype
Mandatory in data modeling
Always comprised of numbers
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct

Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Database Design projects must use Consultants or they will fail. True or
False? Mark for Review
(1) Points

True
False (*)
Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public
speaking? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical
information (*)

Being enthusiastic
All of the Above
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
47. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. All systems must include functionality to provide logging or journaling in
conceptual data models. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
50. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with TimTest: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 7 Lesson 2
(Answer all questions in this section)

41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Database Design projects must use Consultants or they will fail. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 8 Lesson 2

(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public
speaking? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical
information (*)
Being enthusiastic
All of the Above
Correct Correct
Section 10 Lesson 1

(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
46. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
47. When you add the concept of time to your data model, your model becomes
more complex. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True
False (*)

Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. All systems must include functionality to provide logging or journaling in
conceptual data models. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
50. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points

An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Tim
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. The market for IT professionals is still increasing and will continue to do so in
the future, as the world gets ever more dependent on computer systems. True or False? Mark
for Review
(1) Points
True (*)
False

Correct Correct
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review
(1) Points
Data (*)
Information
Both
Neither

Incorrect Incorrect. Refer to Section 1.
3. What is the difference between “information” and “data”? Mark for
Review
(1) Points
Data is held and understood only by Users
Information is held and understood only by users
Information and data have no differences – they are two words for the same thing
Data turns into information when it is stored in a database and accessed by systems and
users (*)
Correct Correct
Section 1 Lesson 3

(Answer all questions in this section)
4. Databases are used in most countries and by most governments. Life, as we
know it, would change drastically if we no longer had access to databases. True or False? Mark
for Review
(1) Points
True (*)
False
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Databases perform these functions…. Mark for Review
(1) Points
Running multiple applications on multiple client-servers

Providing integrated software on fast processing servers
Providing software running on a variety of platforms and configurations allowing companies
a structured way to access and manage their data (*)
They run purely as client-based software on personal computers
Correct Correct
6. Software cannot operate without Hardware. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct

Section 2 Lesson 2
(Answer all questions in this section)
7. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)
They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Correct Correct

8. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct Correct
9. All of the following are examples of ENTITY: Instance except two. Select the
answers that are ENTITY: Instance. (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)

TRANSPORTATION METHOD: Car (*)
ANIMAL: Dog (*)
MEAT PRODUCT: Lettuce
BODY PART: Larry Ellison
Correct Correct
10. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False

Incorrect Incorrect. Refer to Section 7Skip navigation elements to page contents
Test: Mid Term Exam – Database Design
Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct
answer.
Section 1 Lesson 1
(Answer all questions in this section)
1. Once you have learned how to write programs and build systems, you no
longer need any input or involvement from any users, as you are perfectly capable of delivering the
systems the business needs and wants. Mark for Review
(1) Points
True. All that perfect systems need are correct programs.
False. Business requirements can and will change. For instance new legal requirements may
arise. (*)
True. All users do is delay systems delivery with their forever changing minds and new
requirements.
True. Users never know what they want anyway, so building systems are best left to the
professionals.

Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is a record of one student borrowing one book Data or
Information? Mark for Review
(1) Points
Data (*)
Information
Both
Neither
Correct Correct
3. Consider your school library. It will have a database with transaction details
of which student borrows which books. Is details of the total number of books out on loan in one
given month Data or Information? Mark for Review
(1) Points

Data
Information (*)
Both
Neither
Correct Correct
Section 1 Lesson 3
(Answer all questions in this section)
4. The first step in system development is to document the requirements. Why?
Mark for Review
(1) Points

Wrong. A blueprint for the database design is not needed. We can just start coding straight
away.
It clarifies what a business wants to accomplish, and provides measures for deciding if the
system delivers all that is required. (*)
It allows application development to be conducted without having to consider database
design.
It keeps businesses honest.
Correct Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Businesses involved in any of the following typically use databases to handle
their data: Finance, Logistics, Commerce, Procurement and Distribution? True or False? Mark
for Review
(1) Points

True (*)
False
Correct Correct
6. Oracle Database Software provides which of the following functionality?
(Choose two) Mark for Review
(1) Points
(Choose all correct answers)
Graphical User Interface (*)
Internet Browser
Server (*)
Operating Systems

Incorrect Incorrect. Refer to Section 1.
Section 2 Lesson 2
(Answer all questions in this section)
7. All of the following could be attributes of an ENTITY called PERSON except
one. Select the incorrect one: Mark for Review
(1) Points
Haircolor
Weight
Gender
Natacha Hansen (*)
Correct Correct

8. An entity can have many Unique Identifiers. True or False? Mark for
Review
(1) Points
True (*)
False
Correct Correct
9. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
10. All of the following would be instances of the entity ANIMAL SPECIES except
which? Mark for Review
(1) Points
Dog
Bird
Elephant
Leaf (*)
Correct Correct
Page 1 of 5 Next Summary
Section 2 Lesson 2

(Answer all questions in this section)
11. A/an _________ is a picture of all the information that will form the basis for
the finished system. Mark for Review
(1) Points
ERD (*)
Process
Table
Attribute
Correct Correct
12. Which of the following entities most likely contains valid attributes? (Choose
two) Mark for Review
(1) Points
(Choose all correct answers)

Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct Correct
13. Which of the following statements about relationships are true? (Choose
Two) Mark for Review
(1) Points
(Choose all correct answers)
They become Foreign Keys in the database. (*)

They Must be Mandatory to be created in the database.
They can be either mandatory or optional. (*)
They must exist between two different Entities.
Incorrect Incorrect. Refer to Section 2
Section 3 Lesson 1
(Answer all questions in this section)
14.
Relationship Degree/Cardinality is important. True or False?
Mark for Review
(1) Points
True (*)
False

Correct Correct
15.
Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot

Pigs Ear
Crows Ear
Crows Foot (*)
Correct Correct
17. The single end of a Relationship is called: Mark for Review
(1) Points
Single Toe (*)
Big Toe
Single Foot
Crows Foot

Incorrect Incorrect. Refer to Section 3.
Section 3 Lesson 3
(Answer all questions in this section)
18. Matrix Diagrams are mandatory when doing data modelling. True or False?
Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 4 Lesson 1
(Answer all questions in this section)

19. You can only create relationships to a Supertype, not to a Subtype. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct
20. A Supertype can have only one subtype. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct

Previous Page 2 of 5 Next Summary
Section 4 Lesson 1
(Answer all questions in this section)
21. All instances of the supertype must be an instance of one of the subtypes.
True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
22. A supertype can only have two subtypes and no more. True or False? Mark
for Review
(1) Points
True

False (*)
Correct Correct
23. Which of the following are suitable Entity names? (Choose Two) Mark
for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)

Correct Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have completely
paid any outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped
until the account has been settled in full. (*)
Correct Correct

25. “Only teachers may supervise exams” is an example of which of the
following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the
TEACHER subtype
Correct Correct
26. How would you model a business rule that states that girls and boys may not
attend classes together? Mark for Review
(1) Points

Use a supertype
Use two subtypes with relationships from class to student gender (*)
Make the attribute Gender mandatory
You cannot model this. You need to document it.
Correct Correct
27. Why is it important to identify and document structural rules? Mark for
Review
(1) Points
Ensures we know what data to store and how that data works together. (*)
Ensures nothing. There is no benefits to be gained from documenting your Structural
Business Rules. We need to concentrate on the Procedural Business Rules only.

Ensures we know what Information to store and how that Information works together.
All of the Above.
Incorrect Incorrect. Refer to Section 4
Section 5 Lesson 1
(Answer all questions in this section)
28. Transferable relationships can only be mandatory, not optional. True or
False? Mark for Review
(1) Points
True
False (*)
Correct Correct

Section 5 Lesson 2
(Answer all questions in this section)
29. Which of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
Incorrect Incorrect. Refer to Section 5.
30. If two entities have two relationships between them, these relationships can
be either __________ or __________? Mark for Review

(1) Points
Redundant or Required (*)
Replicated or Required
Resourced and Really Good
Redundant and Replicated
Correct Correct
Previous Page 3 of 5 Next Summary
Section 5 Lesson 2
(Answer all questions in this section)
31. Relationships can be Redundant. True or False? Mark for Review
(1) Points

True (*)
False
Correct Correct
32. Many to many relationships must be left in the Model. It is important to have
them documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
Section 6 Lesson 1

(Answer all questions in this section)
33. The first UID for an entity is called the Primary UID, the second is called
Secondary UID and so on. Mark for Review
(1) Points
Yes, this is the way UID’s are named. (*)
No, it is not possible to have more than one UID for an Entity.
Yes, but then it stops. No entities can have more than two UID’s.
No, each Entity can only have one UID, the secondary one.
Correct Correct
Section 6 Lesson 2
(Answer all questions in this section)

34. An entity without repeated values is said to be on 1st Normal Form. True or
False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 6 Lesson 3
(Answer all questions in this section)
35. Would it be a good idea to model age as an attribute of STUDENT Mark
for Review
(1) Points
Yes
Maybe it could stop us having to calculate someones age every time we need it

Sometimes
No – it breaks the Normalization rules (*)
Incorrect Incorrect. Refer to Section 6
Section 7 Lesson 1
(Answer all questions in this section)
36. Consider the entity ADDRESS with the attributes:
ADDRESS:
# House Number
* Street
* Town
* City
* Year of Build
o City Population
This entity is NOT in 3rd Normal Form (“no non-UID attribute can be dependent on another non-UID
attribute). True or False?

Mark for Review
(1) Points
True (*)
False
Correct Correct
37. An arc can be modelled as Supertype and Subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Incorrect Incorrect. Refer to Section 7

38. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct Correct
39. Arcs are used to visually represent _________ between two or more
relationships in an ERD. Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)

An Arc is what Noah sailed on with all the animals.
Correct Correct
40. Which of the following is NOT a relationship type? Mark for Review
(1) Points
Some to None (*)
One to One
One to Many
Many to Many
Correct Correct

Previous Page 4 of 5 Next Summary
Section 7 Lesson 2
(Answer all questions in this section)
41. A recursive relationship must Mandatory at both ends. True or False? Mark
for Review
(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)
42. Modeling historical data can produce a unique identifier that always excludes
dates. True or False? Mark for Review
(1) Points

True
False (*)
Correct Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Consultants often use their experience in ensuring projects stay on track and
delivers within the timescales set out for the project. True or False? Mark for Review
(1) Points
True (*)
False

Correct Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Your apperance at a presentation is important. You need to look smart and
presentable. True or False? Mark for Review
(1) Points
True (*)
False
Correct Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. If a system includes the concept of time, and it stores Start Dates, then End
Dates becomes Mandatory. For each Start Date attribute you create, you MUST create an End Date
attribute and it must be mandatory. True or False? Mark for Review

(1) Points
True
False (*)
Incorrect Incorrect. Refer to Section 10
46. Which of the following would be a logical constraint when modeling time for
a City entity? Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a
country change. (*)
If you are doing a system for any French City, you would need security clearance

You need a constant record of cities because they are still cities, even if leadership changes
over time, e.g. they get a new Mayor
Correct Correct
47. There is only one way to model time in a Data Model. True or False? Mark
for Review
(1) Points
True
False (*)
Correct Correct
48. All systems must have an entity called WEEK with a holiday attribute, so you
know when to give your employees a holiday. True or False? Mark for Review
(1) Points
True

False (*)
Correct Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Which of the following is a logical constraint, that could result from
considering how time impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start
Date of the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.

Dates must be stored with Time.
Correct Correct
50. Why would you want to model a time component when designing a system
that lets people buy shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of
this information.
To allow the sales people to determine when the shared were bought and therefore at what
price. (*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of
purchase (*)

Correct Correct
Previous Page 5 of 5 Summary
1. The main subject areas taught by the Oracle Academy are: Mark for Review
(1) Points
Computer Repairs
Database performance tuning.
Data Modeling, SQL and PL/SQL (*)
Systems programming and computer architecture
Correct
Section 1 Lesson 2
(Answer all questions in this section)
2. Consider your school library. It will have a database with transaction details of which student
borrows which books. Is details of the total number of books out on loan in one given month Data or
Information? Mark for Review

(1) Points
Data
Information (*)
Both
Neither
Correct
3. What is the difference between “information” and “data”? Mark for Review
(1) Points
Data is held and understood only by Users
Information is held and understood only by users
Information and data have no differences – they are two words for the same thing
Data turns into information when it is stored in a database and accessed by systems and users (*)
Correct

Section 1 Lesson 3
(Answer all questions in this section)
4. Users with detailed business knowledge can provide input to the Database Development Process.
True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 1 Lesson 4
(Answer all questions in this section)
5. Software cannot operate without Hardware. True or False? Mark for Review
(1) Points
True (*)

False
Incorrect. Refer to Section 1
6. Databases were invented in 1989. True or False? Mark for Review
(1) Points
True
False (*)
Correct
Section 2 Lesson 2
(Answer all questions in this section)
7. In a physical data model, a relationship is represented as a? Mark for Review
(1) Points
Column

Row
Instance
Foreign Key (*)
Incorrect. Refer to Section 2
8. Relationship names are usually verbs. True or False? Mark for Review
(1) Points
True (*)
11. All of the following would be instances of the entity ANIMAL SPECIES except which? Mark for
Review
(1) Points
Dog
Bird
Elephant
Leaf (*)

Correct
12. Which of the following entities most likely contains valid attributes? (Choose two) Mark for
Review
(1) Points
(Choose all correct answers)
Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built (*)
Entity: Pet. Attributes: Name, Birthdate, Owner (*)
Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed
Entity: Mother. Attributes: Name, Birthdate, Occupation, Salary
Correct
13. A/an _________ is a picture of all the information that will form the basis for the finished
system. Mark for Review
(1) Points
ERD (*)
Process

Table
Attribute
Correct
Section 3 Lesson 1
(Answer all questions in this section)
14. Relationship Names are optional. True or False?
Mark for Review
(1) Points
True
False (*)
Correct
15. One Relationship can be both mandatory and optional at different ends. True or False? Mark
for Review
(1) Points
True (*)

False
Correct
Section 3 Lesson 2
(Answer all questions in this section)
16. The many end of a Relationship is called: Mark for Review
(1) Points
Gulls Foot
Pigs Ear
Crows Ear
Crows Foot (*)
Correct

17. Entity names are always singular. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 3 Lesson 3
(Answer all questions in this section)
18. Two entities can ONLY have one relationship between them. True or False? Mark for Review
(1) Points
True
False (*)
Correct

Section 4 Lesson 1
(Answer all questions in this section)
19. Which of the following are suitable Entity names? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
DOGS
ANIMAL (*)
ANIMALS
DOG (*)
Correct
20. All instances of a subtypes may be an instance of the supertype but does not have to. True or
False? Mark for Review
(1) Points
True

False (*)
Section 4 Lesson 1
(Answer all questions in this section)
21. The “Other” subtype is mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct
22. All instances of the supertype must be an instance of one of the subtypes. True or False? Mark
for Review
(1) Points
True (*)
False
Correct

23. You can only create relationships to a Supertype, not to a Subtype. True or False? Mark for
Review
(1) Points
True
False (*)
Correct
Section 4 Lesson 2
(Answer all questions in this section)
24. A business rule such as “We only ship goods after customers have completely paid any
outstanding balances on their account” is best enforced by: Mark for Review
(1) Points
Making the payment attribute null.
Making the payment attribute optional.
We need to trust our customers, and we know they will pay some day.
Hiring a programmer to create additional programming code to verify no goods are shipped until
the account has been settled in full. (*)

Correct
25. A new system would have a mixture of both Procedural and Structural Business Rules as part of
the documentation of that new system. True or False? Mark for Review
(1) Points
True (*)
False
Correct
26. Can all constraints be modeled on an ER diagram? Mark for Review
(1) Points
No, in which case you should let the database administrator handle them
No, but you just explain them to the users so they can enforce them
Yes, all constraints must be modeled and shown on the ER diagram
No, so you should list them on a separate document to be handled programmatically (*)

Correct
27. “Only teachers may supervise exams” is an example of which of the following? Mark for Review
(1) Points
A procedural business rule (*)
An attribute that should be stored on the PERSON entity
A structural business rule
An attribute that is not be inherited from the PERSON supertype and is unique to the TEACHER
subtype
Correct
Section 5 Lesson 1
(Answer all questions in this section)
28. A Diamond on a relationship indicates the Relationship as Non-Tranferrable. True or False?
Mark for Review
(1) Points

True (*)
False
Correct
Section 5 Lesson 2
(Answer all questions in this section)
29. Many to many relationships must be left in the Model. It is important to have them
documented as M-M. True or False? Mark for Review
(1) Points
True
False (*)
Correct
30. How do you include a relationship as part of the UID for an entity? Mark for Review
(1) Points

By barring the relationship in question (*)
By reporting it in an external document
By including the UID from the parent entity as an attribute in the entity
You cannot model that.
31. What uncommon relationship is described by the statements: “Each DNA SAMPLE may be taken
from one and only one PERSON and each PERSON may provide one and only one DNA SAMPLE”
Mark for Review
(1) Points
One to Many Optional
One to Many Mandatory
One to One Optional (*)
Many to Many Mandatory
Incorrect. Refer to Section 5
32. A relationship from an entity back to itself is called a ___________ relationship. Mark for
Review

(1) Points
Mandatory
Recursive (*)
Many to Many Optional
Transferrable
Correct
Section 6 Lesson 1
(Answer all questions in this section)
33. People are not born with “numbers,” but a lot of systems assign student numbers, customer
IDs, etc. A shoe has a color, a size, a style, but may not have a descriptive “number”. So, to be able to
uniquely and efficiently identify one instance of the entity SHOE, a/an ______________ UID can be
created. Mark for Review
(1) Points
artificial (*)
unrealistic

structured
identification
Correct
Section 6 Lesson 2
(Answer all questions in this section)
34. An entity without repeated values is said to be on 1st Normal Form. True or False? Mark for
Review
(1) Points
True (*)
False
Correct
Section 6 Lesson 3

(Answer all questions in this section)
35. Any Non-UID must be dependant on the entire UID. True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 7 Lesson 1
(Answer all questions in this section)
36. No parts of a UID are mandatory. True or False? Mark for Review
(1) Points
True
False (*)
Correct

37. An arc can be modelled as Supertype and Subtypes. True or False? Mark for Review
(1) Points
True (*)
False
Correct
38. Primary UIDs are: Mark for Review
(1) Points
Something that each Entity should have, but is not mandatory (*)
Useful as an alternative means identifying instances of an entity, independent of their datatype
Mandatory in data modeling
Always comprised of numbers
Incorrect. Refer to Section 7

39. Arcs are used to visually represent _________ between two or more relationships in an ERD.
Mark for Review
(1) Points
Sameness
Differencies
Exclusivity (*)
An Arc is what Noah sailed on with all the animals.
Correct
40. All relationships participating in an arc must be mandatory. True or False? Mark for Review
(1) Points
True
False (*)
41. Which of the following would be good as a Unique Identifier for its Entity? (Choose Three) Mark
for Review
(1) Points

(Choose all correct answers)
Personal Identification number for Person (*)
Vehicle Registration Number for Car (*)
ISBN Number for Book (*)
Date of birth for Baby
Incorrect. Refer to Section 7
Section 7 Lesson 3
(Answer all questions in this section)
42. If Audit trail attributes are added to an entity they must be in the entities they are auditing.
True or False? Mark for Review
(1) Points
True (*)
False

Correct
Section 8 Lesson 1
(Answer all questions in this section)
43. Database Design projects must use Consultants or they will fail. True or False? Mark for Review
(1) Points
True
False (*)
Correct
Section 8 Lesson 2
(Answer all questions in this section)
44. Which of the following are NOT valid techniques for effective public speaking? (Choose Two)
Mark for Review
(1) Points

(Choose all correct answers)
Whispering (*)
Using specialist language and technical abbreviations when communicating technical information
(*)
Being enthusiastic
All of the Above
Correct
Section 10 Lesson 1
(Answer all questions in this section)
45. Which of the following would be a logical constraint when modeling time for a City entity?
Mark for Review
(1) Points
People are born in the city and people die in the city.
Cites may change their name and/or which country they are placed in, if the borders of a country
change. (*)

If you are doing a system for any French City, you would need security clearance
You need a constant record of cities because they are still cities, even if leadership changes over
time, e.g. they get a new Mayor
Correct
46. There is only one way to model time in a Data Model. True or False? Mark for Review
(1) Points
True
False (*)
Correct
47. Modeling historical data is Optional. True or False? Mark for Review
(1) Points
True (*)
False

Correct
48. When you add the concept of time to your data model, your model becomes more complex.
True or False? Mark for Review
(1) Points
True (*)
False
Correct
Section 10 Lesson 2
(Answer all questions in this section)
49. Why would you want to model a time component when designing a system that lets people buy
shares via the Internet? (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
This would only be required in the US to allow the New York Stock Exchange to be notified of this
information.

To allow the sales people to determine when the shared were bought and therefore at what price.
(*)
You would not want to model this, it is not important.
The price of shares fluctuates and for determining price, you need to know the time of purchase
(*)
Correct
50. Which of the following is a logical constraint, that could result from considering how time
impacts data storage? Mark for Review
(1) Points
An ASSIGNMENT may only refer to an EMPLOYEE with a valid employee record at the Start Date of
the ASSIGNMENT. (*)
EMPLOYEE periods can overlap causing the database to crash.
End Date must be before the Start Date.
Dates must be stored with Time.
Correct

False
Correct
9. Primary Unique Identifiers… (Choose Two) Mark for Review
(1) Points
(Choose all correct answers)
Are Required. The data model is not complete until all entities have a Primary UID. (*)
Distinguish each instance of an entity from all others (*)
Are not required
You may create more than one Primary Unique Identifier for an entity
Correct
10. An entity is instantiated as a ? Mark for Review
(1) Points

experience
instance
table (*)
none of the above
Section 1 Lesson 1
1.Why is it important to identify the business requirements before beginning to program a new
system?
· It is not important to have a blueprint for database design and programs. You should
just start coding as soon as possible, so you can meet your deadlines.
· It clarifies what a business wants to accomplish, so you can get your database design
and coding started correctly. (*)
· It allows application development to be conducted without having to consider
database design.
· It keeps businesses honest.
2.What are the major content areas covered in the Oracle Academy?
· Database programming and Computer repair.
· Database configuration and performance tuning.
· Data Modeling, SQL Java, and PL/SQL (*)
· Data Modeling, Java, and C+
3.There is a big increase in demand for Information Technology professionals in today’s market. True
or False?
· True (*)
· False
Section 1 Lesson 2
1.How do you turn “data” into “information”
· By testing it
· By querying it or accessing it (*)
· By storing it on a server
· By storing it in a database

2.Consider an example where an Oracle database works “behind the scenes” for common internet
activity. Which of the following best describes a database transaction?
· A person searches an airline website to find all available fares for a flight. (*)
· A business identifies what process it uses for purchasing inventory.
· A student places a link to their homepage from the school’s website.
· A person looking in the newspaper for good internet sites.
3.Which of the following are examples of data vs. Information
· A.Student age vs. average age of all students in class
· B. Bank deposit amount vs. total account balance
· C. Winning time for a race vs. length of race
· D. Price of computer vs. total sales of all computers for a company
· E. Both A and B. (*)
· F. B, C, and D
4.What are the results of having all your data in one central location? (Choose two)
(Choose all correct answers)
· Improved Performance (*)
· Easier access to data (*)
· Updates are harder to execute
· Decreased performance
Section 1 Lesson 3
1.Which of the following is the correct order for the Database Development Process?
· Strategy, Analysis, Design, Build (*)
· Analysis, Strategy, Design, Build
· Build, Strategy, Analysis, Design
· Design, Build, Strategy, Analysis
2.Data Modeling is the last stage in the development of a database. True or False?
· True
· False (*)
3.Oracle was one of the first relational database systems available commercially? True or False?
· True (*)
· False
Section 1 Lesson 4

1.Databases function more efficiently as….
· multiple applications on multiple client-servers
· integrated software on fast processing servers (*)
· client-based software of client servers
· client-based software on personal computers
2.Users would use which of the following software to access essential business applications? (Choose
three)
(Choose all correct answers)
· GUI Interface (*)
· Internet Browser (*)
· Server
· Operating System (*)
3.Which of the following is NOT a type of database?
· Hierarchical
· Relational
· SQL (*)
· Network
4.Personal computers (PCs) have been in existence since 1950. True or False?
· True
· False (*)
Section 2 Lesson 1
1.Which of the following are reasons we create conceptual models?
· A.It facilitates discussion. A picture is worth a thousand words.
· B. It forms important hardware system documentation.
· C. It develops business development methodology
· D. It forms a sound basis for physical database design
· B and C
· A and D (*)
2.Examples of hardware are:
· Data entry web pages, Mouse Hard disk.
· Mouse, Hard disk, Monitor (*)
· Monitor, Mouse, Printer, Printed Reports
· Monitor, Mouse, Mouse Pad, Cables and Wires, Hard disk

3.Examples of software are:
· Data entry web pages, Spreadsheets, Google and Yahoo search Engines, SQL Developer,
Oracle Application Express (*)
· Microsoft Word, Microsoft Powerpoint, Microsoft Excel, Mouse pad
· Mouse, Cables, Microsoft Word, Microsoft Powerpoint
· Monitor, Microsoft Word, Microsoft PowerPoint, SQL Developer
Section 2 Lesson 2
1.A/an _________ is a piece of information that in some way describes an entity. It is a property of
the entity and it quantifies, qualifies, classifies or specifies the entity.
· ERD
· Process
· Table
· Attribute (*)
2.In a physical data model, an attribute is represented as a/an
· Column (*)
· Row
· Instance
· Foreign Key
3.Which of the following entities most likely contains invalid attributes?
· Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built
· Entity: Pet. Attributes: Name, Birthdate, Owner
· Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed (*)
· Entity: Mother. Attributes: Name, Birthdate, Hair Colour, Eye Colour
4.An entity may have which of the following?
· experiences
· instances (*)
· tables
· none of the above
5.Unique Identifiers….
· distinguish one entity from another
· distinguish one instance of an entity from all other instances of that entity (*)
· distinguish all entities in a database
· distinguishes nothing
6.The word “Volatile” means….