1. UML Diagrams: Sequence Diagrams Dynamic Analysis Model

2. 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

3. Sequence Diagrams
Sequence Initiation

4. 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

5. Sequence Diagrams Synchronous call
Messages specified on interactions can be synchronous or asynchronous
Synchronous call

6. Sequence Diagrams
Asynchronous call

7. Sequence Diagrams
Display operation names on call arrows

8. Compound and Simple Iteration
Sequence Diagrams
 Compound and Simple Iteration

9. ‘included’ sequence diagrams

10. Showing alternate behavior in a sequence diagram

11. Showing Extension Point

12. Specifying Timing Requirements