COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The following are not included in the characteristics of the primary key
|
|
Column values are unique
|
|
|
Can’t be null
|
|
|
May have more than one primary key
|
|
|
Values in the primary key cannot be deleted from the parent table
|
Explanation:
Detailed explanation-1: -Which of the following are characteristic of a primary key? A primary key must be unique and cannot contain a null value.
Detailed explanation-2: -A primary key that made up of more than one attribute is known as a composite key.
There is 1 question to complete.