Checking It

Select the correct answer to the following questions. There may be more than one answer to some questions.

Multiple Choice

1:Select all valid multiplicities.
  1. 0..1

  2. 1..1

  3. –2..*

  4. 2..*

2:What are valid containments for a relation?
  1. Association.

  2. Substitution.

  3. Aggregation.

  4. Distribution.

3:What does a many-to-many cardinality of a relation between classes A and B mean?
  1. Many objects of type A contain many objects of type B.

  2. Each object of type A contains many objects of type B.

  3. Each object of type B contains many objects of type A.

  4. Both b and c.

4:If relation A→B is navigable from A to B that means:
  1. A has an attribute of type B.

  2. B has an attribute of type ...

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