Question

._______________ integrity means that the __________________key must match in terms of actual values and datatypes with the related ________________key.

Answer 1

Referential integrity means that the foreign key must match in terms of actual values and datatypes with the related primary key.

• Referential integrity helps to maintain relationships between tables in a database management system.

• It is a combination of both the primary key and the foreign key.

• Whenever a foreign key is used, it is to be ensured that it has a reference to the primary key.

• In the absence of referential integrity, incomplete data is returned and no error is shown.

Answer 2

Answer:

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