![]() They represent the flow of activities, decisions, and transitions between them.Įlements: Actions, control flows, decision points, merge points, forks, and joins. Purpose: Activity diagrams are used to model the workflow or business processes within a system. Use Cases: Sequence diagrams are often used to model the dynamic behavior of a system or to specify the flow of control in a particular scenario or use case. They show the order of messages exchanged between these objects and the lifelines of the objects involved.Įlements: Lifelines (representing objects or actors), messages, activations, and objects’ state changes. Purpose: Sequence diagrams depict the interactions between different objects or components in a system over time. Use Cases: State diagrams are particularly useful for modeling the behavior of objects with complex state machines, such as the behavior of a software component in response to various events. ![]() Purpose: State diagrams are used to model the dynamic behavior of an object or a system in terms of its states, state transitions, and events that trigger those transitions.Įlements: States, transitions, events, and actions. Thank you for pointing out this important categorization. Behavior diagrams in UML are used to model and represent the dynamic aspects of a system, illustrating how different components, objects, or processes interact and behave over time. State Diagrams, Sequence Diagrams, and Activity Diagram are categorized as behavior diagrams in UML.
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