Explain the WSDL.
WSDL is a short form for Web Services Description Language, which is used to explain a Web service in terms of the messages that it forms and accepts. The WSDL document is an XML file that has the interface schema for the Web service. It identifies the methods that are used during the exchange among a Web service consumer and a Web service provider. The following are the elements contained in the WSDL document:
Types - Explain the variations of data types that are used to exchange messages among the user and the provider.
Message - Explain the actual message or method call.
Port Type - Explain the set of operations and every related message.
Binding - Explain the protocol details.
Service - Used to make groups a set of related ports together.