Which of the following is an example of an enforcing restriction?
A) ensuring each row has a primary key
B) verifying there are no null values
C) verifying there is at least one secondary key in each table
D) ensuring values in foreign keys are legitimate

Question

Quizplus · Accepted Answer

Enforcing restrictions in foreign keys ensures that the values in the foreign key match those in the primary key of the related table, thus maintaining referential integrity. This is an example of an enforcing restriction. A, B, and C are examples of constraints, but not specifically enforcing restrictions.

Which of the Following Is an Example of an Enforcing