WSDL (Web Services Description Language) is a XML-based language for describing Web services that commonly includes the operations, the messages, the data types and the communication protocols used by the web services. The WSDL specifies the location of the web service and the operations (or methods) that the web service exposes. Initially, the WSDL 1.1 was submitted as a W3C Note by Ariba, IBM and Microsoft for describing services for the W3C XML Activity on XML Protocols in March 2001.
The WSDL defines services as collections of network endpoints that are referred to as ports. The main elements in a WSDL document include portType, message, types and bindings. The WSDL is extensible to allow description of the ports and their messages regardless of what message formats or network protocols are used to communicate. Currently, The WSDL (version 2.0) provides a model and an XML format for describing Web services.
DPM - The Business Architects @ Quadrobay
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