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PERSON BIKER CAMPER RUNNER d Problem 6 a. At a given time, a person must be exactly one of these subtypes.

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Presentation on theme: "PERSON BIKER CAMPER RUNNER d Problem 6 a. At a given time, a person must be exactly one of these subtypes."— Presentation transcript:

1 PERSON BIKER CAMPER RUNNER d Problem 6 a. At a given time, a person must be exactly one of these subtypes.

2 PERSON BIKER CAMPER RUNNER d Problem 6 b. A person may or may not be one of these subtypes. However, a person who is one of these subtypes cannot at the same time be one of the other subtypes.

3 PERSON BIKER CAMPER RUNNER o Problem 6 c. A person may or may not be one of these subtypes. On the other hand, a person may be any two (or even three) of these subtypes at the same time.

4 PERSON BIKER CAMPER RUNNER o Problem 6 d. At a given time, a person must be at least one of these subtypes.

5 Problem 11 STUDENT CONCERTHOMEWORK ATTENDANCECOMPLETION R c. Anchor object: STUDENT; corresponding objects: ATTENDANCE and COMPLETION a., b.


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