What is a BPMN Event?

An Event is a BPMN process modeling element representing something that “happens” during the course of a process. Events affect the flow of the process.  Some events such as most start events and some intermediate events have a “trigger” which defines the cause for the event, while end events often define the “result” or consequence of the ending of a particular sequenced flow.

Start Events can only “catch” a trigger. Similarly, End Events can only create “throw” a result. Intermediate events are less constrained and may catch triggers or throw results.

The symbol used for an event is always an unfilled circle.  However, there are several other standard attributes of the event symbols that are of importance.

BPMN Events

posted @ Sunday, October 9, 2011 9:36 PM by Chris Adams