Purpose of foreign key constraint in SQL Server is __________

SQL Server - Quiz(MCQ)

A foreign key in one table points to a candidate key in another table

FOREIGN KEY constraints identify and enforce the relationships between tables

You cannot insert a row with a foreign key value, except NULL, if there is no candidate key with that value

None of the above

Correct Answer : FOREIGN KEY constraints identify and enforce the relationships between tables

Explanation : Foreign key is to enforce referential integrity.

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