olemus
UML:
toimingute järjestust kirjeldav skeem, vooskeemi ja andmevooskeemi objektikeskne vaste
= a graphical representation of workflows of stepwise activities and actions

ülevaateid
https://en.wikipedia.org/wiki/Activity_diagram
https://www.inf.ed.ac.uk/teaching/courses/seoc/2009_2010/notes/10_notes.pdf
https://www.kdkce.edu.in/pdf/Unit-5%20Activity%20Diagrams-1.pdf

näiteid
https://wcs.smartdraw.com/activity-diagram/img/activity-diagram.jpg
https://cdn.visual-paradigm.com/guide/uml/what-is-activity-diagram/08-activity-diagram-with-swimlane-version.png