Which of the following describes two desirable characteristics of a primary key?
A) A primary key should be a value that may be null and may change over time.
B) A primary key should be a value that is not null and will never change.
C) A primary key should consist of meaningful data and a value that can be changed if needed.
D) A primary key should not consist of meaningful data and a value that can be changed if needed.

Question

Quizplus · Accepted Answer

A primary key must be unique and not null to uniquely identify each record, and it should remain constant to maintain data integrity.

Which of the Following Describes Two Desirable Characteristics of a Primary