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

  • For every relationship, there are six possible sets of minimum cardinalities.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Data Models into Database Designs problems

    Search Results

    • 1. In a 1:1 relationship, the primary key placement is arbitrary.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. An intersection table is required to represent M:N relationships.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. When the parent entity is required, cascading updates and cascading deletions should be allowed or the associated actions on the parent should be prohibited.

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

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Cascading updates refers to child rows being automatically deleted when a parent row is deleted.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Surrogate keys have much meaning for users.

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. When transforming an entity-relationship model into a relational database design, each entity is represented as a table.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. When the parent entity is required and the parent has a surrogate key, update actions can be ignored.

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

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