TOP REASONS WHY WRITING PAPERS IS FUN!!!!

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#10 FINISHED!

Pass the paper, get the grade.

Not done with it yet as of now, so here’s a Loldog picture FTW:

On the doorstep of the the Houses of Parliament, the world renowned Tate Gallery and the splendour of the River Thames, and Buckingham Palace, St John’s Westminster is not just in a desirable part of London but can be considered one of the world’s most desirable residential addresses.

This award-winning exclusive development offers some of the finest luxury apartments that London has to offer, situated around the ancient gardens of St Johns and within touching distance of Victoria, Westminster and St James’s Park Underground Stations.

The apartments have been decorated and fully furnished with true care and attention, granite kitchens, unique marble bathrooms and parquet flooring are just some of the beautifully finished touches the apartments boast.

This apartment block also offers guests a fully-equipped gym, whirlpool, sauna and private health spa with a wide range of alternative health and beauty therapy services. A digital television service, DVD player and wireless broadband are also available in each apartment.

http://www.crownlawn.com/United_Kingdom/london_apartments/westminster/st_johns/st_johns.html

http://www.crownlawn.com

Hi Everyone,  things had been pretty quiet in the past few days, so far most of my program still paying except CorpoNano, which i considered Scam already (they still paying selectively & the website still up).

Anyway, few days ago i’d joined another short term program named OneInv, the “one” investment you are looking for- as the tag line.

The website itself quite nice with a feel of professionally build, and equipped with Ddos protection from blacklotus. OneInv offered multiple plans from 104% for 3 days, 110% after 5 days,124% after 10 days and 150% after 15 days, which means you will received $104,$110,$124 and $150 for every $100 you invest.

OneInv also support several payment methods such as : LibertyReserve, Strict Pay, Solid Trust Pay and Perfect Money. There are few things I like from this Hyip. The first one is their claim on instant deposit & withdrawal, which i liked since i don’t need to wait for couple of hours before my withdrawal arride on my account.  The other thing like and i really, really like is  OneInv tells me the exact date and time when will my plan expires, so no more guessing on what date will my plan expires, why my plan still running etc..etc..

Anyway, this Hyip looks pretty good and solid. So better act fast, before it’s gone.

Pros:

- Instant Deposit & Withdraw

- Low $1 Deposit

- Details on plan Expiration

Cons:

- Low Interest compare with other program

- Some typo?

Crown Lawn have now added their Top 3 Serviced / Leased Apartments to the homepage of the site for both Londn destinations and International.

The Top 3 list for London currently consists of:

The Top 3 list for International apartments currently consists of:

This will allow new and existing customers to find the finest Leased Apartments Crown Lawn have to offer quickly.

http://www.crownlawn.com

Chinese activist Huang Qi gets a three-year prison term for "illegally holding state secrets", but few details are released…. From BBC News. Full story

This site may contain information about: china tour package. The blog is also related to: guangzhou china.

Im Moment kommt leider nicht sehr viel Kreatives und Innovatives von mir   Leider. Sorry for that.

• Accounting report über GlaxoSmithKline
• International Business essay über Globalisation und die EU
• Cultural Studies und ein Thema meiner Wahl
• Strategy essay über eine Firma, werde wohl auch Glaxo nehmen
• und eine Klausur in Accounting am Ende des Semesters

Das sind meine Gründe dafür wünscht mir Glück bei allem. Oder lieber Erfolg. Werde euch weiterhin mit ein paar Fundstücken oder eigenen Bildern versorgen und vlt in der ein oder anderen freien nächtlichen Minute auch etwas bloggen. Nur leider nicht so häufig wie gewünscht.

QA Distiller is a great quality control tool I came across when I was working on the Marketing project I already mentioned in an article about XML in Localisation.
Developed and distributed by Yagamata Europe, this tool has a lot to offer to client-side engineers, multilingual vendors and freelancers alike. In fact I was even using it to enforce proper and consistent use of Terminology in source marketing content, before sending for localisation.

With the impending release of version 7 at the end of this month, I thought it was the perfect opportunity to talk about it on Loc Loc. The purpose of QA Distiller is to batch process quality checks on bilingual files. Essentially, it performs similar tasks to the QA Checker in Trados’s TagEditor, but with some major differences.

The benefits

Multiple file processing: QA Distiller allows you to run a highly customizable list of checks on batches of files. There is no need to open of each individual TTX file, or run the QA Checker successively on each one. Just select the files to process, the settings to apply and run the tool to output a comprehensive report for your follow-up. This is a great way to control and enforce consistency across entire handoffs or projects. Translation quality, Terminology consistency etc. are simultaneously audited across all the files selected.

Multi-lingual processing: better yet, this can also be done across all languages at once, which is particularly powerful for controlling Do Not Translate instructions have been adhered to, for example.

Interactive reporting: the report output is another great selling point. It rates and classifies errors and lets you update it as you review and fix or discard candidate errors. It can be exported to a variety of formats where source, target and error details are summarised and categorised. This is very helpful to communicate with vendors on queries, as well as measure the quality od deliveries. Finally, the report has hyperlinks not only to the file, but to the actual segment where the potential error was detected. This makes the implementation of fixes really quick and easy. No more peeling your eyes out to find typos or endless finger-cramping Ctr+F session. If there is an error, QA Distiller will get you right there!

Software stability: my experience (version 6 in Windows XP) has shown very solid performance and compatibility, and certainly far less crashes than SDL’s QA Checker.

Some rare shortcomings

One of the limitations I found in the current version was that the Translation Consistency check did not work when running QA Distiller across several languages. Instead of reading the language code of each file and filtering the comparison, it reported the fact that translations differed from one language to the next. Not particularly helpful.

Secondly, although the pricing structure offers good choice, the full version seems a bit steep at €1000, especially since it also requires Trados to function on TTX files.

Additionnal Technical Information

QA Distiller supports all languages, and a variety of file formats: TRADOStag documents (TTX), FrameMaker RTF (STF), Translation Memory eXchange (TMX).
Terminology can be checked against proprietary-format dictionnaries (DICT) or the industry-standard Term Base eXchange (TBX).

The upcoming version 7 introduces:

• Tag and ID-aware terminology checks
• New Wrench icon funcitonnalities: batch correction of multiple quotation mark and number formatting
• Fine-grained ignore option for improved noise filtering
• Tag and case-independent consistency check
• Full support for Georgian, Malay (Rumi and Jawi), Serbian (Latin and Cyrillic)

The little green man also told me that there are plans to add support for the many different XLIFF flavours like SDL XLIFF, MemoQ XLIFF, WorldServer XLIFF by the first quarter of next year.

For more details, check the cool demo at http://www.qa-distiller.com/movie/‏

We all know how infuriating it gets when we have to find the nth term of some sequence or the formula connecting the numbers in the sequence.

So I made this PDF that describes everything you need to know for nth terms and their formulas. Enjoy !!!

Nth Term and How to find their formulas

Like The Nightdreamer Inc. ? Enjoyed some of our resources, then why not subscribe to this blog and hence show your appreciation ?

Malam yang dingin

Malam yang dingin, membuat seorang mahasiswa berjalan sendirian yang larut dengan kesendiriannya karena mengikuti kuliah di IT Telkom yang penuh dengan duka dan lara.

ini searching ato indexing ?

Mahasiswa keren itu sedang mencari-cari kuncinya yang hilang. Mahasiswa tersebut bernama G@#$fg(taulaaa). Karena habis kuliah information retrieval jadi harus pandai-pandai searching kunci yang hilang.

Beeeuhh ... datang preman

Tiba-tiba ada mahasiswa lain datang, dan meneriaki mahasiswa tersebut dengan teriakan,”Maling… Ayo Hajar!” Tiga mahasiswa tersebut mempunyai informasi yang sama tentang keberadaan maling yang selalu meresahkan mahasiswa.

apa lo liat2 ????

Ketika berhasil menemukan kuncinya, dan berusaha menyalakan motornya, mahasiswa keren tersebut bingung dengan adanya teriakan maling tersebut. Mahasiswa keren hanya bisa bingung dan pasrah, karena tidak bisa melakukan information retrieval.

ciaat...ciatt.... hiyaaaa ... Rasengaaaan !!!

Gustaf langsung dengan sigap lompat dari motornya. Sedangkan yogi dan pongki sudah bersiaga juga akan menangkap gustaf dan akan memberi pukulan dengan pembobotan. Semua jurus-jurus pukulan ala google.

hiyaaa... Gomu-gomu goo

Dengan sigap, jimmy dan pongki segera menghadang gustaf yang mereka anggap pencuri dengan hadangan inverse document frequency dicampur indexing.

Ampuunn bang... ane emang ganteng...tapi bukan maling @#@$@$#

Akhirnya gustaf tertangkap, dan tanpa basa-basi langsung dihajar dengan pukulan yang bertubi-tubi. Pukulan crawler, tinju indexing, jotosan recall, semuanya pokonya dikeluarkan.

haiiiiyaaaaaaa ... lu sala olangg... haaa

Kemudian dengan tampang kesakitan gustaf berusaha menjelaskan tentang identitas dirinya dan relasinya dengan motor tersebut.

si jimmy lagi melihat BB17 ... hahaha

Jimmy dan pongki segera melihat identitas yang tertera dalam STNK tersebut. Dan guastaf masih mengerang kesakitan karena pukulan-pukulan yang dasyat yang telah dipelajari dalam padepokan information retrieval.

gw bata loo ... maw ???

Karena merasa bersalah jimmy dan pongki meminta maaf kepada gustaf. Gustaf menasehati supaya jangan langsung menghakimi orang dengan seenaknya. Dan akhir kata dari jimmy dan pongki,” Ya maap lach”.

Asdos yang anehhh

Hari ini kuliah tentang information retrieval. Tapi kok quiz ya. Asdos yang jengkelin, ech Soalnya gak mutu juga. Dasar kuliah information retrieval yang aneh.

Mahasiswa yang anehh

Tiba-tiba datang mahasiswa yang ambil matkul information retrieval juga tapi terlambat. Mahasiswa tersebut bernama G*s**f. Puff.. Asdos yang belagu. Qta buat indexing baru tahu rasa tuch asdos.

Mahasiswa-mahasiswa serba aneh dan membingungkan

Tiga mahasiswa yang bingung dengan soal quiz yang diberikan. Mau ketawa bingung, mau sedih juga gak tahu caranya. Dasar quiz informationretrieval yang aneh.

Format Tempat duduk yang aneh

Formasi tempat duduk yang aneh. Masak harus selang-selang. Ini asdos harus dilakukan pembototan dulu dech biar tahu rasa tuch asdos.

Quis yang benar2 aneh

Seperti biasa kalo quiz. Asdos lengah, kita bertindak. Ha.ha… Setiap quiz information retrieval pasti begitu. Namanya jugal kuiah information retrieval, jadi harus aktif mencari informasi jawaban ke teman.

Situasi yang anehh..apa yaa ????

Asdos merasa heran dengan bentuk formasi kita yang baru. Yach, asdos information retrieval cuma bisa bingung dengan apa yang telah terjadi. Wkwkwkw…

Soalnya aneehh siiihh ...

Asdos ini memberikan muka yang sinis kepada kami. Seperti mau mengatkan,”Mahasiswa sekarang payah-payah. Masak quiz information retrieval yang mudah ini aja gak bisa di kerjain!!”

beeeuuhh malah pesbukannn...anehh pisann euyy !!!

Seperti biasa kebanyakan asdos, selalu melihatt profile tentang mahasiswanya. Untuk menggali informasi tipe-tipe dari mahasiswa tersebut.

Maksa ngumpulinn...anehh banget ssiihh

Quiz sudah berakhir. Tapi Jimmy jelek belum selesai mengerjakan. Maka terjadilah tarik-menarik anatara mahasiswa dan asdos. Please dech mas, ini belum selesai beneran.

awasss lww yaa ...anehh !!!

Dengan tampang belagu, asdos information retrieval ini melihat hasil quiz dengan nada mengejek. Dan kedua mahasiswa ini, Yogi gendut dan Jimmy jelek berjanji akan memberikan pelajaran terhadap asdos tersebut.

Anak Pulau - Langit Biru di pantai matras

keindahan pantai matras di pulau bangka pada sore hari, langit yang membiru serasa ada laut di atas langit … beeuhhhh.. 4 thumbs up

Anak Pulau - ganteng

Pemandangan pantai dengan langit biru di sore menjadi background yang bisa membuat pria manapun serasa ganteng… apalagi ane, makin ganteng

Anak Pulau - Langit Biru lagi

Keren euy, pemandangan pantai di sore,mana langitnya biru … pulau di tempat ane emang mangstab 4 thumbs up …againn hihi

Anak Pulau - Aernya biru

Gelokk , aernya cuy … ini nih dapat dipastikan bakalan saingannya Bali.. hahaha … serba biru langit+aer ,.maen2 kesini, full recomended

Anak Pulau - Putra Daerah

beuhhh, senengnya maen di pantai … pasirnya euuyy … putihhhh … pake citraa white kaleeeee ….hahahahaha .. garing !!!!

meng-arak bade

Di bali “bade” merupakan wadah yang digunakan untuk meng-arak orang yang telah meninggal dunia(layon) secara beramai-ramai oleh keturunannya dan masyarakat setempat menuju ke kuburan/setra untuk diaben. Hal ini sebagai bentuk penghormatan kepada orang yang telah meninggal dunia.

pemidahan ke wadag

setelah sampai dikuburan, layon dipindahkan dari bade ke wadag untuk dilakukan prosesi ngaben bersama wadag tersebut. Wadag merupakan sebagai simbol kendaraan sang roh menuju ke alam roh (swah loka).

pembakaran layon

setelah menjalani berbagai tahap upacara ngaben barulah dilakukan pembakaran layon. Hindu percaya manusia terdiri dari 5 unsur(api,tanah,air,udara,ether) dan jika manusia tersebut meninggal maka harus dikembalikan seperti semula. Pembakaran layon merupakan prosesi untuk mengembalikan layon menjadi unsur api,tanah, dan udara.

meng-arak abu layon

dalam ngaben setelah pembakaran layon maka layon yang telah dikembalikan menjadi tanah(abu), maka prosesi selanjutnya abu tersebut akan diarak menuju pantai untuk dilakukan pengembalian ke unsur air.

penghanyutan abu layon

sesampainya abu layon di pantai, maka selanjutnya abu layon tersebut akan dihanyutkan ke tengah pantai untuk mengembalikan layon ke unsur air

Bandung,Tempat Makanan.

Sebenarnya gak ada yang spesial di hiasan dinding ini, cuman tempatnya itu yang rame pas sebelum hari lebaran.Ada yang tau hiasan dinding ini dimana?

si doggie,, eh catty

Putih, Ngegemesin, Kadang-Kadang Nyebelin.Ada yang bisa sebutin Kucing Jenis apa nih ?

lebaran cuuyy

Hari pertama lebaran harus kita isi dengan…..Silaturahmi dengan Pegawai Fast Food!!:hammer: :hammer:

ke lautt ajee !!!

Very NOT Recommended…Ane pengen moto laut gan, tapi….sambil nyetir!!jangan ditiru ya….Langitnya biru banget ya….

Mewah = mepet sawah

pemandangan yang udah sulit dilihat lagi di perkotaan,Sawah yang subur…yang membuat negara kita dijuluki negara Agraris.Dulu……

Malam yang indah.

Malam yang indah. Mobil-mobil berlalu lalang sesuai dengan kehendak pemiliknya. Mencari keinginan dan informasi yang diinginkan oleh pemiliknya. Karena setiap orang pasti akan menemukan informasi tentang arti hidup ini.

cahaya malam

Berkas cahaya pada malam ini menandakan cahaya juga bisa memberikan informasi kepada semua orang. Berkas cahaya ini menunjukan tingkat kesibukan di kota besar. Infromation retrieval.. itulah yang terpenting saat ini.

Tempat makan

Tempat makan di pinggir jalan. Semua tempat makan punya keunikan masing-masing. Pada tempat ini memberikan informasi tentang dinginnya malam, sunyinya malam. Semuanya tergantung kita dalam menggali infromasi tersebut.

lampu-lampu

Nyala lampu pada malam hari, menandakan aktifitas yg masih berlangsung meskipun hari sudah malam. Lampu ini memberikan informasi kepada kita tentang kesetiaan lampu untuk selalu menerangi manusia.

Tempat makan

Tempat makan di daerah burangrang. Hayao deskripsikan tentang informasi apa yang di dapat dari foto ini.

A teacher who asked a teenage pupil at an Exeter school to have sex with him is spared a jail sentence…. From BBC News. Full story

This site may contain information about: educate. The blog is also related to: find a school.

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 (*)