XML Web Services Standards


Wide adoption of the baseline Web service specifications have made Web services a compelling option for distributed application development. The Web service architecture specifies how to send messages, describe operations, and find services, but at the same time is modular enough to handle additional specifications for security and other needed technologies. All of these specifications build on proven and highly regarded standards such as HTTP and XML, making them even more compelling.

This chapter also discussed the following points:

  • The baseline specifications for Web services are SOAP, WSDL, and UDDI.

  • These baseline specifications rely on other specifications, such as XML, XML Namespaces, XML Schema, and HTTP.

  • SOAP is the protocol that describes how to send messages.

  • WSDL is used to describe SOAP-based (and even non-SOAP-based) Web services.

  • UDDI provides a registry of Web services that developers and users can use to register and locate Web services.

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