HW10: Chapter 5

5.3

5.5

5.7

5.8

Having two different models provide different contexts for how the system behaves.  In the case of the activity diagram we get to see all the activities in a process and the flow of control.  In the case of the sequence diagram we get to see the interactions between the actors and the objects in a system and see also which objects get user move over time.  It may also be possible to find logical flaws in the overall design by developing both.