Unified Modeling Language

UML or Unified Modeling (Eglish: Modelling) Language is a meta language which uses mainly diagrams 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).

https://upload.wikimedia.org/wikipedia/commons/d/dc/Objektorientieren_methoden_historie.png.

Use Case Example

http://www.uml-diagrams.org/use-case-diagrams/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

http://www.uml-diagrams.org/activity-diagrams/activity-frame.png

Components Start point Transition Action Merge Decision and Guards Split (fork) and Synchronization (join) Input / Ouput Event Swimlane

See also

• UML on Wikipedia
• Visual Paradigm.com, Use Case
• Visual Paradigm.com, Activity Diagram.