The purpose of foreign keys is to
A) Uniquely and universally identify instances of the entity into which they are posted.
B) Link relations so the database can be used to store business data and to generate useful information.
C) Create null values in the database.
D) Determine minimum cardinalities of relationships between entities.
E) Determine maximum cardinalities of relationships between entities.

Question

Quizplus · Accepted Answer

Foreign keys are used to establish and enforce a link between the data in two tables, ensuring referential integrity and enabling the database to store and retrieve related business data efficiently.

The Purpose of Foreign Keys Is to