Web Services Description Language
According to the WSDL 1.1 specification, WSDL is defined as:
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)
In simple terms, WSDL provides a formal definition of the web service through abstract and concrete definitions of the interface. The following diagram shows the main structure of a WSDL document:
WSDL is an XML document with a <definitions> element at the root and the child ...
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