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CSE :: Database System 2 - CS

  1. A relationship is an association representing the interaction between attributes.

  2. A.

     True

    B.

     False


  3. A binary relationship is a relationship between two or more entities.

  4. A.

     True

    B.

     False


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

  6. A.

     True

    B.

     False


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

  8. A.

     True

    B.

     False


  9. A logical representation of the data for an organization or for a business area is known as an entity-relationship model.

  10. A.

     True

    B.

     False


  11. A derived attribute is an attribute whose values can be calculated from a related relationship.

  12. A.

     True

    B.

     False


  13. A fact is a word or phrase that has a specific meaning for the business.

  14. A.

     True

    B.

     False


  15. A strong entity is an entity whose existence depends on some other entity type.

  16. A.

     True

    B.

     False


  17. Multiple and binary relationships are the same thing.

  18. A.

     True

    B.

     False


  19. No two attributes of the same entity type should have the same name.

  20. A.

     True

    B.

     False