4.4. WSDL SOAP Binding
In this section, I will take a look at the details of how WSDL describes SOAP-based Web services. Document/literal SOAP messages are commonly used and their WSDL is the simplest to understand, so we'll start with them. Next I'll discuss the WSDL for RPC/encoded SOAP messages because this format is also commonly used; especially when you are exposing existing applications as Web services. The other two formats: document/encoded and RPC/literal are rarely used and exist mostly because the SOAP and WSDL standards allow them. To spare you unnecessary details, I won't discuss them here.
You already know the definitions of the terms RPC, document, literal, and encoded within the context of SOAP messages. Let's define these terms ...
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