Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Database Management SystemDatabase Keys
Foreign key:
- A.Column that uniquely identifies each row in its own table
- B.Column linking primary key of another tableCorrect answer
- C.Column that can contain only numeric values
- D.Column that must be indexed automatically
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Practice these MCQs in the appQuick fact: A foreign key is a column linking primary key of another table, used to establish relationships between tables.