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What is the purpose of a primary key in a database?

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Question: What is the purpose of a primary key in a database?

Options:

  1. To uniquely identify a record
  2. To link two tables
  3. To enforce data integrity
  4. To speed up queries

Correct Answer: To uniquely identify a record

Solution: 

A primary key is used to uniquely identify each record in a database table.

What is the purpose of a primary key in a database?

Practice Questions

Q1
What is the purpose of a primary key in a database?
  1. To uniquely identify a record
  2. To link two tables
  3. To enforce data integrity
  4. To speed up queries

Questions & Step-by-Step Solutions

What is the purpose of a primary key in a database?
No concepts available.
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