Which of the following is a characteristic of a primary key?

Practice Questions

Q1
Which of the following is a characteristic of a primary key?
  1. It can contain duplicate values
  2. It can be null
  3. It uniquely identifies a record in a table
  4. It can be changed frequently

Questions & Step-by-Step Solutions

Which of the following is a characteristic of a primary key?
No concepts available.
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