A referential integrity constraint limits the values of a foreign key.

Question

Quizplus · Accepted Answer

Referential integrity ensures that a foreign key in a table refers to a valid primary key in another table. This means that the values in the foreign key column must match the values in the primary key column, or be null. Any attempt to insert or update a foreign key with an invalid value would violate the referential integrity constraint and be rejected by the database.

A Referential Integrity Constraint Limits the Values of a Foreign