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DC
Question Practice

Which of the following is a primary key?

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

MCQ_SA
CBSE
Class 12
Computer Science
Computer Science
Database Concepts
Question Bank

Which of the following is a primary key?

Single Answer MCQ
Q-00095110

Which of the following is a primary key?

1

A field that uniquely identifies a record

2

A foreign key referencing another table's field

3

An indexed field for faster queries

4

A field that allows NULL values

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