  In this paper we describe a framework for exploiting the semantics of Web
services through UDDI registries. As a part of this framework, we extend the
DAML-S upper ontology to describe the functionality we find essential for
e-businesses. This functionality includes relating the services with electronic
catalogs, describing the complementary services and finding services according
to the properties of products or services. Once the semantics is defined, there
is a need for a mechanism in the service registry to relate it with the service
advertised. The ontology model developed is general enough to be used with any
service registry. However when it comes to relating the semantics with services
advertised, the capabilities provided by the registry effects how this is
achieved. We demonstrate how to integrate the described service semantics to
UDDI registries.
