1 Chapter 13: Class Diagram Chapter 19 in Applying UML and Patterns Book.

2 Overview  What is Class Diagram ?  The different between Domain Model and Design Model.  How to build UML Class Diagram (Class, Attribute, Relationship).

3 What is Class Diagram ?  A class diagram shows the existence of classes and their relationships in the logical view of a system.  UML modeling elements in class diagrams:  Classes and their structure and behavior.  Association, aggregation, dependency, and inheritance relationships.  Multiplicity and navigation indicators.  Role names.

4 Domain Model vs. Design Model Classes

5 Example DCD

6 Creating NextGen POS DCD  Identify all the classes participating in the software solution. Do this by analyzing the interaction diagrams. Draw them in a class diagram.  Duplicate the attributes from the associated concepts in the Domain Model.

7 Creating NextGen POS DCD  Add method names by analyzing the interaction diagrams.  The methods for each class can be identified by analyzing the interaction diagrams.

8 Creating NextGen POS DCD  Add type information to the attributes and methods.

9 Method Names - Multiobjects  The find message to the multiobject should be interpreted as a message to the container/collection object.  The find method is not part of the ProductSpecification class.

10 Adding Navigability & Dependency Relationships