Using WSDL/UDDI and DAML-S in Web Service Discovery

Web services enhance current web functionality by altering its nature from document to service oriented. These services are self-describing, selfcontained, modular applications accessible over Internet. They can be used by humans or programs in order to accomplish a particular task. To benefit from them, an efficient discovery mechanism for locating and selecting the appropriate web services is required. In contrast to common search engines, this mechanism should be based on required/offered service capabilities rather than on mere keywords. This paper presents the basic requirements for such a mechanism and evaluates current web service technology (WSDL, UDDI, DAML-S) that is used to address these requirements.