1. Week 5

2. On to Object Design Sequence diagrams Interaction Diagrams
This is notation week!
On to Object Design
Sequence diagrams
Interaction Diagrams
Class Diagrams

3. Chapter 14

4. Agile Modeling Lightweight UML drawing
Reduce drawing overhead
Understand
Not document
UML case tools
Have value
Have a cost!

5. For a three week iteration, between a few hours and one day!
How much modeling
Guideline:
For a three week iteration, between a few hours and one day!

6. Fig. 14.1

7. Object design skills over UML notation
What are the responsibilities of an object?
Who does it collaborate with?
Design patterns?

8. Class - Responsibility - Collaboration
CRC cards
Class - Responsibility - Collaboration

9. Fig. 14.2

10. Fig. 14.3

11. Design is hard - poor design is all to easy
Summary
Important Principles!
Design is hard - poor design is all to easy
CRC cards are a great guide
Pay attention to operation (dynamic modeling!)