Abstract:
Web services provide interfaces to web resources described by
WSDL
interface definitions. The Web Service MEDiator system (WSMED) enables
querying data accessible through web services. WSMED allows web service
meta-data to be automatically extracted from any WSDL description.
Then views can be created in terms of the imported meta-data and
queried using SQL. To enhance query performance, WSMED permits to
complement the automatically extracted web service meta-data with
semantic enrichments. A WSMED prototype is being evaluated over existing
web services to verify the effectiveness of the approach. It is being
investigated how semantic enrichments and other query optimization
methods are useful for efficient querying of mediated web services
