Download A Rigorous Semantics for BPMN 2.0 Process Diagrams by Felix Kossak, Christa Illibauer, Verena Geist, Jan Kubovy, PDF

By Felix Kossak, Christa Illibauer, Verena Geist, Jan Kubovy, Christine Natschläger, Thomas Ziebermayr, Theodorich Kopetzky, Bernhard Freudenthaler, Klaus-Dieter Schewe

This e-book presents the main whole formal specification of the semantics of the company approach version and Notation 2.0 typical (BPMN) to be had so far, in a mode that's simply comprehensible for quite a lot of readers – not just for specialists in formal tools, yet e.g. additionally for builders of modeling instruments, software program architects, or graduate scholars focusing on company strategy management.

BPMN – issued by way of the article administration staff – is a wide-spread regular for company technique modeling. in spite of the fact that, significant drawbacks of BPMN contain its restricted aid for organizational modeling, its in simple terms implicit expression of modalities, and its loss of built-in person interplay and information modeling. additional, in lots of circumstances the syntactical and, specifically, semantic definitions of BPMN are misguided, incomplete or inconsistent. The booklet addresses concrete matters in regards to the execution semantics of industrial tactics and gives a proper definition of BPMN method diagrams, which could function a valid foundation for additional extensions, i.e., within the type of horizontal refinements of the middle language.

To this finish, the summary kingdom laptop (ASMs) strategy is used to formalize the semantics of BPMN. ASMs have validated their price in numerous domain names, e.g. specifying the semantics of programming or modeling languages, verifying the specification of the Java digital laptop, or formalizing the ITIL switch administration process.

This type of development promotes extra consistency within the interpretation of complete types, in addition to genuine exchangeability of versions among various instruments. within the outlook on the finish of the booklet, the authors finish with providing extensions that deal with actor modeling (including an intuitive technique to denote permissions and obligations), integration of user-centric perspectives, a cultured verbal exchange suggestion, and information integration.

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Additional info for A Rigorous Semantics for BPMN 2.0 Process Diagrams

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For instance, in the example above, there is one value of lifecycleState for each activity. There may be more parameters, however. For instance, in the semantic model introduced in this book, the function lifecycleState is also dependent on an instance—Activity1 can be “Active” with one instance and “Completed” with another instance, for instance: { lifecycleState(InstanceA, Activity1) = " A c t i v e ", lifecycleState(InstanceB, Activity1) = " Com pl et ed " } A particular combination of parameter values for a function is called a location.

G. [22, p. 20ff]). g. in a particular programming language). The more abstract versions of the model serve as a documentation of the specification and of design; enable easy implementations of a single abstract model for different platforms (in the spirit of model-driven development); and support maintenance tasks. Stepwise refinement can also be reversed to stepwise abstraction, so the ASM method is also suitable for reverse engineering. Summing up, the ASM method: • provides a means for rigorous specification, • allows to specify algorithms at arbitrary levels of abstraction, • allows to bridge different levels of abstraction by stepwise refinement, down to actual implementation, and • enables us to write models with well-defined semantics while still being generally understandable by a diverse audience.

1 A very simple BPMN diagram 19 Activity1 StartEvent1 EndEvent1 simplicity, we then also have the sequence flows, each of which can, at a particular point in time, carry an arbitrary number of tokens. Then the state of the simple diagram is described by the combination of the lifecycle state of the activity and the number and instance (“type”) of tokens at each of the two sequence flows. Thus, one particular state of this diagram could be described by the set: { tokensInSequenceFlow(SequenceFlow1) = {"A" , "B"}, lifecycleState(Activity1) = " A c t i v e ", tokensInSequenceFlow(SequenceFlow2) = { } } Note that even this very simple diagram has infinitely many possible states due to the arbitrary number and instances of tokens in each of the sequence flows.

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