Glossary of Unified Modeling Language terms

A-D

Action - a diagram that describes procedural logic, business process and work flow
Activity diagram - a diagram that describes procedural logic, business process and work flow
Activity - a procedure carrying out behaviour in a State machine diagram
- Do - a type of Activity which may be interrupted, as oppose to normal Activities which may not be interrupted
- Internal - an Activity that is executed within a State
  - Entry - an Activity that is executed when a State is entered
  - Exit - an Activity that is executed when a State is exited
Event - when it occurs on an Object it may cause a Transition in a State machine diagram

State - an Object exists at one of the States described in a State machine diagram
- Final state - the State at which an Object ceases to exist
- Initial pseudostate - points to the initial State of an Object
- History pseudostate - points to the initial State of an Object where no history was saved of its previous State
- Superstate - construct allowing several States which share common Transitions and Internal Activities
State diagram - synonym for State machine diagram
State machine diagram - describes a Class in terms of the States
Transition - movement from one State to another in a State machine diagram. The transition is specified by its Trigger-signature [Guard]/Activity