A Semantic Approach to Web Services for Interoperability and Integration of E-Services in Service-Oriented Architecture based E-Governance System

Interoperability and integration among the heterogeneous systems and data sources are tedious job in e-governance due to legacy database, architectures with private networks, limited bandwidth and search capabilities. For these reasons, web service technology is well suited for e-governance system. But the major drawbacks of the web services technologies are their inability to enable automatic discovery, composition, selection of web services and therefore human intervention & effort is required. We propose semantics to the web services through the standard ontology languages Web Service Modeling Language (WSML) to construct machine processable and interoperable. Discovery of services is the key technology in service oriented web software development. How to deploy semantically enriched E-governance web services and how to exploit semantics through web service registries are illustrated. Here we focused on the need of use the semantics in discovering web services in serviceoriented semantic web service based e-governance framework. We propose a way to facilitate the issue of discovering the university e-governance services for student clearance certificate that addresses a user need. In this paper, it is also shown how a generic university governance service model can be expressed by means of WSML -a fully fledged logic programming language for describing Semantic Web Services. A novel concept regarding the security of web services is introduce here to protect, authorize, authenticate the propose model in e-governance system. KeywordsSOA, Interoperability, Web Services, Semantic Web Services, Ontology, WSML, WSMX.