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Abstract. Developing an interoperable system is one of today's challenging issues in ubiquitous enterprise systems. Initial Web Service-Oriented solutions have enabled the use and combination of distributed functional components within and across company boundaries, but they offer only syntactical description that failed to hold the promise of automatically interacting, dynamically composed web service. Semantic Web Services (SWSs) are an extension of Web Services, with an explicit representation of meanings, to improve their usage and ease scalability. In this paper, we present a Semantic Web Service-Oriented Architecture for enterprise in which data sources and services are made available through SWSs, described by ontologies, allowing interoperability as well as reasoning to create a comprehensive response adapted to user goals, and presenting a use case scenario in the context of an apparatus market, it can also be taken into e-govemment consideration.

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