CHAPTER 19Introduction to Web Serviceswith SOAP

Web services allow you to share data between server-to-server systems. They represent automated, machine-readable interactions between machines and typically operate using HTTP.

The Web Services Description Language (WSDL) describes the abilities of the web service. The SOAP protocol encodes and encapsulates the data you wish to share. The purpose of SOAP is to exchange packets of data, which are called envelopes, using a common format that is universally understood. This universal understanding is critical to web services, as they may be programmed in vastly different programming languages that have very different expectations and methodologies.

In this chapter, you will learn the basics of WSDL ...

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