Depending on the circumstances, it is possible that a foreign key is part of the primary key of the relation in which it is a foreign key.

Question

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A foreign key can be part of the primary key of a relation. In this case, the foreign key is both a foreign key to another table and a part of the primary key of the current table. This situation is known as a composite primary key.

Depending on the Circumstances, It Is Possible That a Foreign