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21 Cards in this Set
- Front
- Back
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Case models describe? |
System functionalities to users. |
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Sequence models describe? |
Sequences of objects interactions to produce one behavior |
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Activity Models describe? |
Data flow and control flow to implement an operation. |
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Case models are used to? |
model functionality of a system as in interacts with users or outside entities. |
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Actors do what? |
Directly interact with a system |
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Use cases do what? |
Show the various interactions of actors with the System |
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Are error messages are part of a use case? |
Yes |
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Each use case comes with? |
A use case description |
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Can use cases be structured? |
Yes; complex applications can have use cases that involve other use cases. |
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What are the three relationships between use cases? |
-include relationship -extend relationship -Generalization |
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What is an include relationship? |
One use case within the behavior sequence of another. |
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What is the UML notation for a include relationship? |
A dashed arrow between the two use cases annotated with the keyword <> |
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What is an extend relationship? |
Add incremental behavior to use. The extension adds itself to the base case. |
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What is the UML notation for a extend relationship? |
A dashed arrow between the two use cases annotated with the keyword <> |
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What is a generalization relationship? |
Show specific variations on a general use case. Similar to generalization among classes. |
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What is the UML notation for generalization among use cases? |
A arrow between the two use cases. |
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Sequence models describe? |
The interaction of objects in the system with each other and with the actors to achieve a given behavior. They show participants and message sequence between the objects. |
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Sequence diagrams should be prepared for? |
-At least one per use case -each error condition -complex interactions(broken into multiple sequence diagrams) |
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Activity Diagram shows? |
The steps to a complex computation process. |
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Can sequence diagrams can be used to show concurrency? |
Yes |
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If no branch condition is satisfied then? |
Yo have an ill formed diagram. |
