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CSE :: Database System 2 - CS

  1. An entity is something that can be identified in the user's work environment; something that the users want to track.

  2. A.

     True

    B.

     False


  3. Entity instances are associated by relationship classes.

  4. A.

     True

    B.

     False


  5. 1:1, 1:N and N:M relationships are also known as HAS-A relationships.

  6. A.

     True

    B.

     False


  7. In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.

  8. A.

     True

    B.

     False


  9. A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.

  10. A.

     True

    B.

     False


  11. An entity class is a collection of entities and is described by the structure of the entities in that class.

  12. A.

     True

    B.

     False


  13. Relationship classes are associations between entity classes.

  14. A.

     True

    B.

     False


  15. An identifier typically uses more than one attribute.

  16. A.

     True

    B.

     False


  17. An identifier determines the type of relationship that an entity has.

  18. A.

     True

    B.

     False


  19. A recursive relationship is a relationship between an archetype and an instance of that archetype.

  20. A.

     True

    B.

     False