Activity diagram

UML 1.x Activity diagram for a guided brainstorming process.

Activity diagrams[1] are graphical representations of workflows of stepwise activities and actions[2] with support for choice, iteration, and concurrency. In the Unified Modeling Language, activity diagrams are intended to model both computational and organizational processes (i.e., workflows), as well as the data flows intersecting with the related activities.[1][3] "Object nodes hold data that is input to and output from executable nodes, and moves across object flow edges. Control nodes specify sequencing of executable nodes via control flow edges."[1] In other words, although activity diagrams primarily show the overall control flow, they can also include elements showing the data flow between activities through one or more data stores.[1]

  1. ^ a b c d "Activities". Unified Modeling Language 2.5.1. OMG Document Number formal/2017-12-05. Object Management Group Standards Development Organization (OMG SDO). December 2017. p. 373.
  2. ^ Glossary of Key Terms at McGraw-hill.com. Retrieved 20 July 2008.
  3. ^ J. Rumbaugh, I. Jacobson, and G. Booch. The Unified Modeling Language Reference Manual. Addison-Wesley, 1999.

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