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  • Question
  • When mapping a supertype/subtype relationship which of the following is true?


  • Options
  • A. The supertype primary key is assigned to each subtype.
  • B. The subtype primary key is assigned to each supertype.
  • C. There is no link between the supertype/subtype entities.
  • D. There is no primary key/foreign key relationship between a supertype/subtype.

  • Correct Answer
  • The supertype primary key is assigned to each subtype. 


  • More questions

    • 1. In the relational model, relationships between relations or tables are created by using:

    • Options
    • A. composite keys.
    • B. determinants.
    • C. candidate keys.
    • D. foreign keys.
    • Discuss
    • 2. What does microprocessor speed depend on?
    • Discuss
    • 3. What does RSI stand for?
    • Discuss
    • 4. Which Stack is used in 8086?
    • Discuss
    • 5. What is object repository?
    • Discuss
    • 6. Which is the Stack used in 8085?
    • Discuss
    • 7. What does GUI stand for?
    • Discuss
    • 8. What is the main reason the OSI Model was created?
    • Discuss
    • 9. Ethernet uses which topology

    • Options
    • A. Star
    • B. Bus
    • C. Twisted pair
    • D. Both B & C
    • Discuss
    • 10. What are various scheduling queues?
    • Discuss


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