What is the distinction between a WBS and a process model?

Describe the difference between WBS and process model?

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"A process model describes the software activities in a generic sense, that is, for many different projects. It describes the process, the artifacts produced and used, and the actors responsible for the activities. A process model is a graph; it can have cycles and so on. A work breakdown structure is a tree that expands the process model’s activities with details and necessary subtasks that are specific for a particular project. A WBS task that appears in every project should also be in the process model."

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The definition of process model is needed in various contexts. As an example, operating process modeling the enterprise process model can often be referred to as this company process model. Process models are core concepts from the discipline of Process Engineering.

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