Multiple choice

The purpose of the primary key in a database is to

  1. unlock the database

  2. provide a map of the data

  3. uniquely identify a record

  4. establish constraints on database operations

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The primary key in a database table serves to uniquely identify each record/row. It ensures that no two records have the same value in the primary key column, enabling unambiguous identification and retrieval of specific records.

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