Understanding Key Types in Database Management Systems (DBMS)
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Questions and Answers

What is the purpose of keys in DBMS?

  • To create relationships between tables
  • To perform complex calculations
  • To uniquely identify a row of data in a table (correct)
  • To organize data in tables

    • Which type of key uniquely identifies a row in a table?

  • Super key
  • Composite key
  • Alternate key
  • Candidate key (correct)

    • Which key type can be a combination of two or more columns to uniquely identify a row?

  • Composite key (correct)
  • Compound key
  • Alternate key
  • Super key

    • What is the main function of a foreign key in DBMS?

    <p>To ensure referential integrity between related tables</p> Signup and view all the answers

    In a real-world application with thousands of records, why are keys important in a DBMS system?

    <p>To uniquely identify any row of data in a table</p> Signup and view all the answers

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