BPMN Collaboration diagrams
Collaboration diagrams consist of a collection of participants
that are represented by pools. Pool interactions are represented by
message flows, and can include processes within pools.
Collaborations
A collaboration usually contains two or more pools that represent the participants in the collaboration diagram. The message exchange between participants is represented by a message flow that connects two pools or objects within the pools.
In a BPMN process diagram there is usually only one participant. In BPMN collaboration diagrams, you can have multiple processes or participants represented on the diagram. You can also model the messages that are sent between the processes and how they interact with each other.
In the following BPMN collaboration diagram, two participants are shown: a customer and a bank participant. The tasks for each are shown within each pool and in the messages that are sent to each participant.
