Requiring a CustomerID to exist in a Primary table before it can exist in a foreign table is an example of:
A) Referential Referring.
B) Referential Integrity.
C) Ethical Integrity.
D) the Hoffer Principle.

Question

Quizplus · Accepted Answer

This is an example of referential integrity, which is a database constraint that ensures that a foreign key value in a table references an existing primary key value in another table. In this case, the foreign key (CustomerID) in the foreign table cannot exist unless it references an existing primary key (CustomerID) in the primary table.

Requiring a CustomerID to Exist in a Primary Table Before