These events relate to time in the real world and exceptions caused by incomplete specifications. Formal execution semantics workflow system execution. Other advantages of APEX were given. A workflow modelling example was described using a diagram. Health insurance claim processing was examined.
Distribution is implicit in the execution model.
The model elements were described. The model is comprised of EOBs and PE's services and events. Active Process execution was then described. Each EOB is a component that represents a real world processing entity to the system. Event based workflow system architecture.