The ____ constraint can be placed on a column to ensure that every row in the table has a value for that column.
A) HAS VALUE
B) NOT NULL
C) MUST HAVE VALUE
D) NOT EMPTY

Question

Quizplus · Accepted Answer

The NOT NULL constraint ensures that every row in the table has a value for that column. Option A and C are not valid constraints in SQL, and Option D is not a common SQL syntax for a constraint.

The ____ Constraint Can Be Placed on a Column to Ensure