Unified Modeling Language

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UML or Unified Modeling (Eglish: Modelling) Language [1] is a meta language which uses mainly diagrams [2] to describe a system.

History

The authors of UML are Grady Booch, James Rumbaugh en Ivar Jacobson (The Three Amigo's). They had all three their own specialism which has been standardized in UML.

  • Booch had Booch 95,
  • Rumbaugh had Object Modelling Technique (OMT)
  • Jacobson had Object Oriented Software Engineering (OOSE).

Objektorientieren_methoden_historie.png.


Use Case Example

business-use-case-diagram-elements.png Components
  • Use Case
  • Actor
  • Association
  • System Boundary

There is a slight difference between a use case and a business use case. Same applies to Business Actor and Business boundary. Business can be recognized by the cross line.

Stereotypes
  • Include, usage of another use case
  • Extend, optional extension of another use case
Template
  • Number or name of the usecase
  • Summary
  • Actors
  • Pre-condition
  • Scenario
  • Post-condition
  • Alternatives
 Miscellaneous
  • Generalization
  • Multiplicity

Activity Diagram

activity-frame.png Components
  • Start point
  • Transition
  • Action
  • Merge
  • Decision and Guards
  • Split (fork) and Synchronization (join)
  • Input / Ouput
  • Event
  • Swimlane

See also

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Reference

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  1. ↑ UML-Diagrams, uml-diagrams.org is an excellent Website with lots of information on UML. The content of this Website is used for this Article.
  2. ↑ Visual Paradigm, UML-Diagrams.
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