Database Normalization and DML Quiz
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Questions and Answers

What is the main purpose of database normalization?

  • To increase data anomalies
  • To complicate the database structure
  • To reduce data redundancy and improve data integrity (correct)
  • To speed up data retrieval

    • Which normal form deals with the removal of transitive dependencies?

  • 1st Normal Form (1NF)
  • 3rd Normal Form (3NF) (correct)
  • Boyce-Codd Normal Form (BCNF)
  • 2nd Normal Form (2NF)

    • What is the purpose of DML in a database?

  • To control access to the database
  • To design the user interface for the database
  • To define the structure of the database
  • To manipulate data in the database (correct)

    • Which normal form deals with the removal of partial dependencies?

    <p>2nd NF</p> Signup and view all the answers

    What is the main drawback of data redundancy in a database?

    <p>Decreased data integrity</p> Signup and view all the answers

    Which DML operation is used to remove existing data from a database table?

    <p>DELETE</p> Signup and view all the answers

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