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Home ‣ Database ‣ Data Models into Database Designs See What Others Are Saying!
  • Question

  • 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

  • Correct Answer
  • the primary key 

    • More questions

    • 1. Independent data marts are often created because an organization focuses on a series of short-term business objectives.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. Oracle directly supports the definition of surrogate keys.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The "F" in RFM analysis stands for ________ .

    • Options
    • A. frequently
    • B. freshness
    • C. fast food
    • D. fantasy
      • Discuss
    • 5. The design guidelines and priorities for read-only databases are different because read-only databases are never updated.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Which of the following statement is true concerning objects and/or classes?

    • Options
    • A. An object is an instance of a class.
    • B. A class is an instance of an object.
    • C. An object includes encapsulates only data.
    • D. A class includes encapsulates only data.
      • Discuss
    • 7. Who invented Java?

    • Options
    • A. Netscape
    • B. Microsoft
    • C. Sun
    • D. None of the above is correct.
      • Discuss
    • 8. Which is not a type of data management technology?

    • Options
    • A. Relational
    • B. Rational
    • C. Object-oriented
    • D. Dimensional
      • Discuss
    • 9. HTML is an application of a more robust document markup language called:

    • Options
    • A. XHTML.
    • B. XML.
    • C. SGML.
    • D. None of the above is correct.
      • Discuss
    • 10. A candidate key is a determinant that determines all the other columns is a relation.

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

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