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Home ‣ Database ‣ Data Models into Database Designs Comments
  • Question

  • The DBMS allows surrogate keys to be changed.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Data Models into Database Designs problems

    Search Results

    • 1. The phrase "SALE.CNumber must exist in CUSTOMER.CNumber" is a referential integrity constraint.

    • Options
    • A. True
    • B. False
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    • 2. The design guidelines and priorities for read-only databases are different because read-only databases are never updated.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. One common design problem when designing a database from existing data is the presence of inconsistent values in the received data.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. When you are given a set of tables and asked to create a database to store their data, the first step is to create the new database.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Proper normalization eliminates duplicated data.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. For every relationship, there are six possible referential integrity actions.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. In 1:N relationships, which entity becomes the parent entity is arbitrary.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A foreign key is used to implement relationships between tables.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. All primary keys are required.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. When the parent entity is required, a new parent row can always be inserted.

    • Options
    • A. True
    • B. False
      • Discuss

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