Triggers
• The workflow system cannot force things to happen
in reality:
– The arrival of an electronic message (EDI) which is
needed to execute a task.
– A resource which starts to work on a case.
– The arrival of a paper document.
– A phone call to confirm a purchase order.
• A workflow system is a reactive system, i.e. it is
triggered by the environment.
• Some tasks require a trigger.
Triggers
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