Semantics-enabling machines to “understand” and automatically process the data that they merely display at present.
Semantic Web is an emerging paradigm shift to fulfill this goal. Web service & Ontology are two concepts that taking the spotlight in enabling tomorrow‟s Web. Web Service is a set of related functionalities that can be programmatically accessed through the Web such as E-tax preparation, stock trading, etc. Ontology is a formal and explicit specification of a shared conceptualization. The combination of these concepts is called Semantic Web Services.