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Real World XML Web Services: For VB and VB .NET Developers by Yasser Shohoud

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1.5. Typical Web Service Architecture

Regardless of the tools or programming languages you use to build Web services, the high-level architecture shown in Figure 1.1, is typical, assuming you are using SOAP over HTTP to invoke the Web service. Typically, you'll build your Web service using your favorite programming language (for example, VB 6 or VB .NET) then expose it using the SOAP Toolkit or .NET's built-in support for Web services. A client written in any language and running on any platform can invoke your Web service by processing the WSDL document that describes your service. The client then formulates a SOAP request message based on the service description. Your Web service will sit behind a Web server, typically Internet Information ...

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