Tags » Primary Key

Basis data

Praktikum minggu 8 gue belajar mengenai basis data. Basis data terdiri dari field-field (tabel) yang berisi atribut (isi tabel) dan memiliki primary key (kode unik yang berbeda sama sekali antar tabel) serta foreign key (primary key yang ada pada tabel induk menjadi isi dari tabel anak). 638 more words

Tugas Penkom

partition key, composite key and clustering key in Cassandra

There is a lot of confusion around this, I will try to make it as simple as possible.

The primary key is a general concept to indicate one or more columns used to retrieve data from a Table. 560 more words

Java

Pinang

Assalamu’alaykum semua (:

Sudah lama tidak menulis lagi di white board ini.
Banyak yang ingin kuceritakan di sini, semoga bermanfaat bagi saya pribadi dan kamu. Kamu, iya kamu, readers yang semoga dirahmati Alloh (: 585 more words

Primary Key

SQL: Alter script to change the Primarykey Column datatype

–This will drop the primary key constraint
ALTER TABLE DROP CONSTRAINT PK_TARGET_TYPE

–Alter datatype
ALTER TABLE ALTER COLUMN INT NOT NULL

–Add Primary key constraint… 21 more words

Sql Server

Performance Tuning

Nan was an Oracle DBA who wished to start a company specialized in performance tuning. Her friend Cathriene  felt together they can start a venture of PERFORMANCE TUNING for people.. 176 more words

IDENTITY column autoincrement functionality in Oracle 12c

Oracle 12c has introduced the IDENTITY column which is the automatic method over the old trigger-sequence based approach to auto-populate the primary key of a table. 264 more words

Oracle 12c Installation & New Features

Auto-increment primary key in Pre 12c releases (Identity functionality)

Oracle 12c has introduced the IDENTITY COLUMN functionality which provides an automatic functionality of a trigger-sequence approach for populating the primary key of a table. However, for Pre 12c releases, developers need to stick to the old… 191 more words

Oracle 12c Installation & New Features