Event (UML)

An event in the Unified Modeling Language (UML) is a notable occurrence at a particular point in time.

Events can, but do not necessarily, cause state transitions from one state to another in state machines represented by state machine diagrams.

A transition between states occurs only when any guard condition for that transition are satisfied.

Unified Modeling Language
Actors
  • Organizations
    • Object Management Group
    • UML Partners
  • Persons
    • Grady Booch
    • Ivar Jacobson
    • James Rumbaugh
Concepts
Object oriented
  • Object-oriented programming
  • Object-oriented analysis and design
  • Object-oriented modeling
Structure
  • Actor
  • Attribute
  • Artifact
  • Class
  • Component
  • Interface
  • Object
  • Package
  • Profile diagram
Behavior
  • Activity
  • Event
  • Message
  • Method
  • State
  • Use case
Relationships
  • Aggregation
  • Association
  • Composition
  • Dependency
  • Generalization (or Inheritance)
Extensibility
  • Profile
  • Stereotype
Other
  • Multiplicity
Diagrams
Structure
  • Class
  • Component
  • Composite structure
  • Deployment
  • Object
  • Package
Behaviour
  • Activity
  • State Machine
  • Use case
Interaction
  • Communications
  • Sequence
  • Interaction overview
  • Timing
Derived languages
  • Systems Modeling Language (SysML)
  • UML eXchange Format (UXF)
  • XML Metadata Interchange (XMI)
  • Executable UML (xUML)
Other topics
  • Glossary of UML terms
  • Rational Unified Process
  • Comparison of UML tools
  • UML colors


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