Discovery for Web Services Based on Relationship Model

The Web is moving toward a collection of interoperating Web Services. Achieving this interoperability requires dynamic discovery of Web Services. Current Web Services discovery technology based on UDDI does not make any use of semantic information and therefore fails to address the problem of matching between capabilities of services. In this paper, we develop a service repository that extends UDDI registries and combines the information of service providers, capability descriptions of services and referred ontologies based on relationship model. Our approach enables users to reference ontology data directly from SQL. We also discuss how semantic - based Web Services matching is implemented on top of Oracle RDBMS.