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Home ‣ Database ‣ Managing Databases with Oracle See What Others Are Saying!
  • Question

  • Oracle maintains a System Change Number (SCN) which is a database-wide value that is incremented by Oracle whenever database changes are made.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • More questions

    • 1. Market basket analysis primarily uses the technique of conditional probabilities.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A stored procedure is a program that performs some common action on database data and is stored in the database.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. If an entity adheres to the disjoint rule, then an entity instance can be a member of more than one entity for a given supertype.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Which of the following columns is(are) are required in a table?

    • Options
    • A. A foreign key
    • B. An alternate key
    • C. A primary key
    • D. A surrogate key.
      • Discuss
    • 5. Packaged data models are meant to be exactly right straight out of the box.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value.

    • Options
    • A. the primary key
    • B. any alternate key
    • C. a surrogate key
    • D. a foreign key
      • Discuss
    • 7. Multiple inheritance allows a class to inherit features from more than one superclass.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A database design may be based on existing data.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. If both data and database administration exist in an organization, the database administrator is responsible for which of the following?

    • Options
    • A. Data modeling
    • B. Database design
    • C. Metadata
    • D. All of the above.
      • Discuss
    • 10. The degree of a relationship refers to the number of entity classes in the relationship.

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

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