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Home ‣ Database ‣ Modeling Data in the Organization Comments
  • Question

  • A time stamp is a time value that is associated with a data value.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Modeling Data in the Organization problems

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    • 1. Some business rules cannot be represented in common data modeling notation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A fact is a word or phrase that has a specific meaning for the business.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A strong entity is an entity whose existence depends on some other entity type.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A derived attribute is an attribute whose values can be calculated from a related relationship.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. No two attributes of the same entity type should have the same name.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. An attribute is a person, place, object, event in a user environment.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Business rules and policies are universal.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. A logical representation of the data for an organization or for a business area is known as an entity-relationship model.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Relationships cannot have attributes.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Weak entities do not get mapped into a relation.

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

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