An index created to support a ____ constraint does not allow any null values in any of the indexed columns,because there is an automatic NOT NULL constraint added to a primary key column.
A) PRIMARY KEY
B) FOREIGN KEY
C) UNIQUE
D) CHECK

Question

Quizplus · Accepted Answer

A PRIMARY KEY constraint automatically enforces NOT NULL and UNIQUE constraints, ensuring that all values in the primary key column(s) are unique and not null.

An Index Created to Support a ____ Constraint Does Not