kaabara saha
7 years ago

Referential integrity means

A. Do not enter a value in the foriegn key field if a child table if that value does not exist in the primary key of the parent table

B. Do not enter the value in the primary key field if child table if that value does not exist in the primary key field if the parent table

C. Do not enter a value in foreign key field of parent table if that value does not exist in the primary key of the child table

D. All the above

Answer: Option A


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