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Home ‣ Database ‣ Object-Oriented Database Comments
  • Question

  • ODL supports the abstract keyword for classes and operations.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Object-Oriented Database problems

    Search Results

    • 1. In ODL, you specify an operation using parentheses after its name.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Before specifying a key for a class, you must specify its extent.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The ODMG Object Model supports only unary and binary relationships.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. If you know all the possible values that an attribute can have, you can enumerate those values in ODL.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Each site (or node) in a distributed system is subject to the same types of failure as in a centralized system.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The Object Model supports different literal types, but does not support atomic literals, collection literals, and structured literals.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. An attribute's value is always literal.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A collection of literals or object types is called a bag.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Literals do not have identifiers, and, therefore, cannot be individually referenced like objects.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. An attribute's value is either a literal or an object identifier.

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

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