Designing and Implementing Business Process Models : ARIS Method manual : Modeling within the views and levels of the ARIS concept : Process view : Requirements definition : Functions - Organization - Data : EPC/PCD
EPC/PCD
EPCs and PCDs represent the same facts.
Up to this point, we have been dealing with only two views; now a third view is introduced. The process chain's partial views are thus combined to form an overall view, and the interactions of all components of the ARIS concept can be examined. So the process chain - our original object of consideration - is again represented in detail. However, this examination does not focus on the details provided by the individual views for the objects examined, but on the connections between these objects.
The following figure shows a process chain with all its views. Events representing data view objects are placed in the first column. The arrows lead to the process column where the process chain's functions are listed. Thus, the first and second columns define the event control. The third column lists data objects and shows their relations to individual functions. The view of the second and third column of the PCD defines the data flow within the process chain. Unlike the PCD introduced in chapter The Process chain diagram, the process chain diagram of the requirements definition has no columns for defining the processing type and IT system. These facts are required to record the actual situation in a company, but they are not part of the subject area-related description of a business process. The organizational units of the organization view that are responsible for carrying out the individual functions of the process chain are defined in the fourth column.
PCD
The process chain illustrated in this figure can also have the form of an EPC.
EPC
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