![]() On the other hand, the Business Process Execution Language for Web Services (BPEL) is an executable language structured in blocks, supported by many execution platforms, making it possible to specify the actions in the business processes with Web services. Today, it is universally recognized that formal methods are useful for the specification, design and verification of almost all systems, and essential for the most critical ones. Sometimes, however, this large number of controls and action nodes available can become a weakness since a given semantics can be represented in many ways, causing some ambiguity and raising the question of bisimilarity between two models. ![]() It is a rich and expressive graphical language specially designed to provide a notation that is easily understood by all members of a company. Due to its versatility and wide variety of constructs, BPMN (Business Process Model and Notation) is today the leading standard notation for creating visual models of business or organizational processes.
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