UML diagrams Class diagrams -describe classes and their relationships Interaction diagrams show the behaviour of systems in terms of how objects interact with each other State diagrams and activity diagrams show how systems behave internally Component and deployment diagrams -show how the various components of systems are arranged logically and physically www.oseng.com O Lethbridge/Laganiere 2001 Chapter 5: Modelling with classes© Lethbridge/Laganière 2001 Chapter 5: Modelling with classes 3 UML diagrams • Class diagrams —describe classes and their relationships • Interaction diagrams —show the behaviour of systems in terms of how objects interact with each other • State diagrams and activity diagrams —show how systems behave internally • Component and deployment diagrams —show how the various components of systems are arranged logically and physically