engineering computer science MCQ #631

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

engineering computer science MCQ #631

  1. Question 1

    Q1. What is the purpose of a primary key in a database table?

    • A) To uniquely identify each record
    • B) To provide data security
    • C) To improve query performance
    • D) To enforce data consistency

    Answer: To uniquely identify each record

    Explanation: A primary key is used to uniquely identify each record in a table, ensuring data integrity and preventing duplication.