1. Unified Modelling Language (UML) Software Engineering Lab. Sharif University of Technology

2. Why We Model ? ► A model is a simplification of reality. model ► We build models so that we can better understand the system we are developing ► Benefits:  Models help us to visualize a system as it is or as we want it to be.  Models permit us to specify the structure or behavior of a system. behavior  Models give us a template that guides us in constructing a system. template  Models document the decisions we have made.

3. Building Blocks of the UML Building Blocks of the UML ► The vocabulary of the UML encompasses three kinds of building blocks: ► The vocabulary of the UML encompasses three kinds of building blocks:  Things  Relationships  Diagrams

4. Things  Classes  Interfaces  Use Case  Component  Node  Packages  Notes

5. Relationships in the UML ► Dependency ► Association ► Generalization ► Realization

6. Diagrams in the UML  Class diagram  Object diagram  Use case diagram  Sequence diagram  Collaboration diagram  Statechart diagram  Activity diagram  Component diagram  Deployment diagram

7. Use case Diagram

8. Classes

9. Class Diagram

10. Modeling Simple Collaborations

11. Modeling a Logical Database Schema

12. Generalization Among Packages

13. Modeling Groups of Elements

14. Sequence Diagrams

15. Collaboration Diagrams

16. Activity Diagrams

17. State Machines

18. Components

19. Components and Interfaces

20. Nodes and Components