Die UML (unified modeling language)

Modeling: designing of software applications before coding.

Grafische Sprache UML http://www.uml.org/

...specify, visualize, and document models of software systems, including their structure and design

• Structural Diagrams:

  Class D., Object D., Component D., and Deployment D.

• Behavior Diagrams:

  Use Case D., Sequence D., Activity D., Collaboration D., and Statechart D.

• Model Management Diagrams:

  Packages, Subsystems, and Models.