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Foreign key is the one in which the ________ of one relation is referenced in another relation.

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Foreign key is the one in which the ________ of one relation is referenced in another relation.

(a) Foreign key

(b) Primary key

(c) References

(d) Check constraint

The question was asked in quiz.

This key question is from Integrity Constraints in division SQL : Queries, Constraints and Triggers of Database Management

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Correct answer is (b) Primary key

The best I can explain: The foreign-key declaration specifies that for each course tuple, the department name specified in the tuple must exist in the department relation.

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