1. Activity, Collaboration, and Component Diagrams Philip Liew pliew@alumni.uwaterloo.ca

2. Activity Diagrams Represent the business and operational workflow of a system Shows activity, and event that causes object to be in particular state

3. Symbols Starting point –First activity of the flow Activity Decisions

4. Symbols Signals (input and output) Concurrent activity Final activity

5. Activity Example

6. Sequence Diagrams Depicts a sequence of actions that occur in a system Captures invoked methods of objects, and order of invocation Represents dynamic behaviour of system

7. Sequence Symbols Object is an instance of a class Name to the left of “:” is object name Name to the right of “:” is class name Arrows represent messages –Simple messages –Special message creating object –Special message destroying object –Message response

8. Sequence Diagram Horizontal object shows life of represented object Vertical axis represents sequence of invocation of object

9. Sequence Diagram Skeleton

10. Collaboration Diagram Sequence diagram is time ordered Like activity diagrams but shows association with other objects in the system

11. Elements Object Relation/Association Message –Number represents order of interaction

12. Component Diagram Represents Implementation perspective Reflect grouping of different design elements of system

13. Component Elements Component –Interacting objects within system Class/Interface/Object Relation/Association

14. Component Diagram Example

15. Deployment Diagram Represents physical relationships among software and hardware components as realized in running system Nodes represent computational elements (i.e. processor, server, etc.)

16. Deployment Diagram Skeleton

17. Example

19. Courseware Example Construct the design elements for a system that can be used to manage courses/classes The organization offers a courses in areas such as learning management techniques and understanding different software languages and technologies Each course consists of a set of topics Tutors assigned courses to teach according to their specialty and availability Publishes and maintains calendar of courses and assigned tutors Course Administrators who manage content, assign courses to tutors, and define schedule

20. Identify Actors Tutors Course Administrators Students Course Administrator is main actor

21. Use Case Manage courses –View courses –Manage topics for a course –Manage course information Manage course assignments –View course calendar –View tutors –Manage tutor information –Assign courses to tutors

22. Use Case

23. Class Diagram

24. Activity Diagram

25. Sequence Diagram

26. Collaboration Diagram

27. Component Diagram