Flow Objects:
- Events - a trigger or result represented by a circle, can be Start, Intermediate or End
- Activities - a task or sub-process represented by a rounded-corner rectangle
- Gateways - decisions or forking/merging of paths represented by a diamond shape
Connecting Objects:
- Sequence Flow - the order which Activites will take place represented by a solid line arrow
Message Flow - messages between to participants represented by a dashed line with an open arrowhead - Association - used to associate flow objects represented by a dotted line
Swimlanes:
- Pool - organises different activities into categories using a big rectangle
- Lane - organises activities more precisely as a sub-part of the pool
Artifacts
- Data Objects - shows what data is required or produced in an activity represented by a page with folded corner
- Group - used to group different activities with a rounded-corner rectangle and dashed lines
- Annotation - used to give the reader more understanding
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