Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Database Management SystemDatabase Keys
Foreign key is?
- A.A field in one table that refers to the primary key of another tableCorrect answer
- B.A unique identifier for each record in a table
- C.A key that can contain duplicate values
- D.A combination of multiple columns to uniquely identify a record
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Practice these MCQs in the appQuick fact: A foreign key is a field in one table that refers to the primary key of another table, used to establish relationships between tables.