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Question Practice

What primarily differentiates a foreign key from a primary key?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 11
Informatics Practices
Informatics Practices
Database Concepts
Question Bank

What primarily differentiates ...

Single Answer MCQ
Q-00066964

What primarily differentiates a foreign key from a primary key?

1

Foreign keys allow duplicates; primary keys do not

2

Foreign keys cannot be NULL; primary keys can

3

A foreign key is always derived from a composite key

4

Foreign keys are never indexed

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