Introduction to WSDL

From http://www.w3schools.com (Copyright Refsnes Data)

# Introduction to WSDL

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.

From http://www.w3schools.com (Copyright Refsnes Data)