The "_____" characteristic of a primary key states that the primary key must uniquely identify each entity instance, must be able to guarantee unique values, and must not contain nulls.
A) unique values
B) nonintelligent
C) preferably single-attribute
D) security-complaint

Question

Quizplus · Accepted Answer

The "unique values" characteristic of a primary key states that the primary key must uniquely identify each entity instance, must be able to guarantee unique values, and must not contain nulls. The other characteristics (nonintelligent, preferably single-attribute, security-complaint) are also important for a primary key, but do not address the key requirement of ensuring unique values.

The "_____" Characteristic of a Primary Key States That the Primary