Referential integrity constraints are also called as _________(a) Functional dependencies(b) Subset dependencies(c) Superset dependencies(d) Primary dependenciesI got this question by my college director while I was bunking the class.The question is from Integrity Constraints topic in section Intermediate and Advanced Sql of RDBMS

Referential integrity constraints are also called as _________(a) Func

1.	Referential integrity constraints are also called as _________(a) Functional dependencies(b) Subset dependencies(c) Superset dependencies(d) Primary dependenciesI got this question by my college director while I was bunking the class.The question is from Integrity Constraints topic in section Intermediate and Advanced Sql of RDBMS
Answer» Correct choice is (b) Subset dependencies The BEST explanation: Referential integrity constraints are also called as subset dependencies. It is called so because the set of foreign KEY values in R1 of R2 must be a subset of the set of primary key values in r2.

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