SAWSDL study

SAWSDL study:

To make sense of all this data and theseservices, the Semantic Web builds on the foundationsof logic and knowledge representation tohelp computers find the right information for theirusers. Finding and combining information is onlypart of the vision, however. Computers must alsobe able to find and combine services on the Webto free users’ hands and make the Web of servicesscale together with the Web of data.It provides a common ground for the various ongoing effortstoward SWS frameworks, such as theWeb Service Modeling Ontology(WSMO; www.wsmo.org)2 and the OWL-based Web Service Ontology(OWL-S; www.daml.org/services/owl-s).

the W3C formed aworking group to standardize semanticannotations for WSDL, which resultedin the recommendation for SAWSDL,published in August 2007. SAWSDLbuilds mainly on WSDL 2.0,4 but alsosupports the still-prevalent WSDL 1.1.5On the semantic side, SAWSDL is independentof any ontology technologyand assumes that semantic conceptscan be identified via URIs. For instance,SWS frameworks can use the Resource Description Framework (RDF) and Web Ontology Language (OWL) with SAWSDL to annotate Web services.

WSDL and SAWSDLSAWSDL is a set of extensions forWSDL, which provides a standarddescription format for Web services.WSDL uses XML as a common flexibledata-exchange format and appliesXML Schema for data typing. Itdescribes a Web service on three levels: