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Introduction to WSDL

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WSDL is an XML-based language for describing Web services and how to access them.

What You Should Already Know

Before you continue you should have a basic understanding of the following:

  • XML
  • XML Namespaces
  • XML Schema

If you want to study these subjects first, find the tutorials on our Home page.

What is WSDL?

  • WSDL stands for Web Services Description Language
  • WSDL is written in XML
  • WSDL is an XML document
  • WSDL is used to describe Web services
  • WSDL is also used to locate Web services
  • WSDL is a W3C recommendation

WSDL Describes Web Services

WSDL stands for Web Services Description Language.

WSDL is a document written in XML. The document describes a Web service. It specifies the location of the service and the operations (or methods) the service exposes.

WSDL is a W3C Recommendation

WSDL became a W3C Recommendation 26. June 2007.

You can read more about the XML Schema standard in our W3C tutorial.

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