Abstract
This chapter proposes an extension to the activity graph of the Unified Modeling Language (UML) to support the Workflow Management Coalition (WfMC) standard. The definition of a business process has been standardized by the WfMC with the purpose of satisfying the need of interaction and connectivity between process definition tools and different workflow systems. Here, the WfMC meta-model is explained. The UML activity diagrams, used for the business process modeling, support less detail than the WfMC standard. In this chapter, an extension of the UML’s activity graph meta-model is proposed, and its formalization using the workflow meta-model is defined. The purpose of this chapter is to obtain an extension of UML to support the workflow process definition without changing the standard with the same expressive power as the WfMC. It increments the expressive power of the activity diagrams so that the business processes modeled with the UML notation can be executed by a workflow engine.
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