Which of the following states the Rule of Entity Integrity?
A) Every row must have a value for the primary key and each value must be unique.
B) Every foreign key must appear as another table's primary key.
C) Every row must have a value for the primary key and values may be repeated.
D) None of the above.

Question

Quizplus · Accepted Answer

The Rule of Entity Integrity states that every row must have a value for the primary key, and each value must be unique. This means that no two rows can have the same primary key value, and no row can have a null value for the primary key.

Which of the Following States the Rule of Entity Integrity