UML Diagrams: Sequence Diagrams Dynamic Analysis Model

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UML DiagramsSequence DiagramsDynamic Analysis
Model
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Sequence Diagrams

• Depict object interactions in a given scenario of
  a given Use Case
• Specify the messages passed between objects using
  horizontal arrows including messages to/from
  external actors
• Time increases from Top to bottom

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Sequence Diagrams

• Sequence Initiation

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Sequence Diagrams

• Identify objects needed to support use case,
  determine sequence of internal events following
  the external initiating event
• Diagrams that are not initiated with an external
  actor represent only a partial sequence
• Partial sequence diagrams should clearly identify
  the actor initiated sequence diagrams from which
  they are launched

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Sequence Diagrams

• Messages specified on interactions can be
  synchronous or asynchronous

Synchronous call
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Sequence Diagrams

• Asynchronous call

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Sequence Diagrams

• Display operation names on call arrows

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Sequence Diagrams

•  Compound and Simple Iteration

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included sequence diagrams
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Showing alternate behavior in a sequence diagram
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Showing Extension Point
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Specifying Timing Requirements