Introduction To WSDL - Introduction To WSDL The Web...

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Introduction To WSDL The Web Services Description Language (WSDL) is an XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information. The operations and messages are described abstractly, and then bound to a concrete network protocol and message format to define an endpoint. Related concrete endpoints are combined into abstract endpoints (services). The current version is WSDL 2.0, but much work is still done using WSDL 1.1. WSDL 2.0 is a standardisation of the language by the W3C . This has involved clarifying ambiguities, fixing some "broken" bits, dropping some complex sections and (naturally...:-) changing the names of some key concepts/elements. Essentially, a WSDL document describes three properties of a Web Service: o What a service does -- the functions which the service can provide, and the arguments needed to invoke them.
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