UML Diagrams

UML Diagrams

UML 2.0 has 13 different types of diagrams, articulated in two groups:structural and behavioral. Structural diagrams define classes as well as their attributes, operations, and relationships. Behavioral diagrams show collaborations among objects as required by the system. Table 2-2 lists all UML diagrams available.

Table 2-2. Diagrams in UML 2.0

DiagramCategoryPurposeActivityBehaviorShows the flow of operations in an activityClassStructureShows classes, interfaces, and relationships within a systemCommunicationBehaviorShows the interaction between objectsComponentStructureShows components and their dependenciesComposite structureStructureShows the internal structure of a classDeploymentStructureShows how components are mapped to hardware resourcesInteraction overviewBehaviorShows sequences and activitiesObjectStructureShows a view of the system at a particular timePackageStructureShows how classes are split into logically related groupsSequenceBehaviorShows the interaction between objectsState machineBehaviorShows how the state of objects changes after eventsTimingBehaviorShows the behavior of objects in a period of timeUse caseBehaviorShows what actors perform which action in the system