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Systems based on a service-oriented architecture (SOA) can be implemented with many different technologies, and in particular, they can be implemented with a heterogeneous set of technologies. An enterprise service bus (ESB) is a typical option for bridging the technology boundaries. It is desirable to have technology-independent models of the core services in the IT system. We present here computation-independent models (CIMs) and platform-independent models (PIMs) for service oriented architectures. Our models have the following advantages: Some of the CIMs are closely related to Petri net approaches; the PIMs are expressed in the same formalism as the CIMs; a canonical PIM is easily derived from a CIM; the semantics of the PIMs matches the operation of a typical enterprise service bus architecture. Finally, both CIM and PIM are defined as core semantic data models and can therefore be created with most semantic data modeling tools.
Date of Conference: 16-16 Sept. 2008