May 2002
Intermediate to advanced
416 pages
8h 37m
English
Content preview from Executable UML: A Foundation for Model-Driven Architecture
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4.3. Activity Diagrams
When we have a lot of use cases, especially sea-level use cases, it can be difficult to understand how the individual use cases interact. The use case diagram shown in Figure 4.7 is a table of contents of the use cases in Order Merchandise. While it shows actors and activities, it does not show any context to those activities. How can we show these user activities and how the individual use cases are sequenced to carry out those activities?
Figure 4.8 shows an activity diagram that presents the use case Order Merchandise as a sequence of single-interaction use cases.
Figure 4.8. Activity Diagram for the Use Case Order Books
Each oval is an activity, corresponding to a use case. The arrows between the activities show sequence: ...
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