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Home ‣ Database ‣ Logical Database Design See What Others Are Saying!
  • Question

  • Relations are:


  • Options
  • A. two-dimensional tables.
  • B. three-dimensional tables.
  • C. four-dimensional tables.
  • D. five-dimensional tables.

  • Correct Answer
  • two-dimensional tables. 

    • More questions

    • 1. An enterprise database is which of the following?

    • Options
    • A. A database designed to support only users external to an organization
    • B. A database designed to support an entire organization
    • C. A database designed to support a relatively small group
    • D. A database designed to support a single PC
      • Discuss
    • 2. Data administrators are responsible for:

    • Options
    • A. physical database design.
    • B. managing technical issues in the database environment.
    • C. overall management of data resources in an organization.
    • D. writing application programs.
      • Discuss
    • 3. Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?

    • Options
    • A. Nonrepeatable read
    • B. Phantom read
    • C. Dirty read
    • D. Consistent read
      • Discuss
    • 4. Data mining applications are used accomplish which of the following tasks?

    • Options
    • A. Process transactions only
    • B. Do RFM analysis only
    • C. Do what-if analysis only
    • D. Do both RFM and what-if analysis
      • Discuss
    • 5. How many tables may be included with a join?

    • Options
    • A. One
    • B. Two
    • C. Three
    • D. All of the above.
      • Discuss
    • 6. The goal of information systems planning is to align information technology with the business strategies of the organization.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. A ternary relationship is so called because in contains two entities and one association between them.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The restore/rerun technique involves reprocessing the day's transactions up to the point of failure.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. A dynamic view is one whose contents materialize when referenced.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The term neural networks as used in data mining is a misnomer.

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

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