Re: What are web services ?
Razvan MIHAIU wrote: >> find a good definition of this ? Web services are a vehicle for collaborative Internet computing. They expose methods that can be invoked remotely. >> A web service must be based on SOAP in order to belong in this category? A web service must use XML for transferring data (like SOAP) ? SOAP, XML-RPC and REST are three types of web services, with SOAP providing RPC-style or document-style messaging. >> Can we have web services without WSDL and UDDI ? WSDL and UDDI are first-generation web services technology. They provide a solution for describing a service, discovering a service and specifying the contract between the provider and consumer. There's been work on more sophisticated solutions -- for example, semantic web services based on an ontology language (OWL-S or WSMO). There's more information in "Developing Semantic Web Services" by Peter Alesso. Here's an excerpt: http://www.webservicessummit.com/Excerpts/BuildingSemanticWS.htm ======== Ken North =========== www.WebServicesSummit.com www.SQLSummit.com www.GridSummit.com
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