1. Chapter 4 - 1 Conceptual Modeling OSM –model –application model OSM components –ORM (Object-Relationship Model) –OBM (Object-Behavior Model) –OIM (Object-Interaction Model) OSM ontology –advantage: direct, real-world modeling of an application –disadvantage: larger gap to concrete implementation

2. Chapter 4 - 2 Objects and Relationships

3. Chapter 4 - 3 Object and Relationship Sets

4. Chapter 4 - 4 Sample Application Model

5. Chapter 4 - 5 Generalization/Specialization

6. Chapter 4 - 6 Roles (template)

7. Chapter 4 - 7 Aggregation (Template)

8. Chapter 4 - 8 High-Level Object and Relationship Sets