5. Web Services and Web Services Description Language

Web Services Description Language (WSDL) is considered one of the keys to the implementation of SOA. WSDL, an extension of the Extensible Markup Language (XML), provides an excellent combination of tags including a complete description of a service or a set of services. The description includes all related information required for any application, including service name, number and types of parameters required for invoking the service, return type, location of the server application, and, most important, details of the description of the service. Services described this way are discoverable and amenable for invocation by other services.

WSDL (pronounced “Wisdel”) is another XML vocabulary ...

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