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Web Services is about application to application communication.

WSDL is an XML based language for describing Web Services.


WSDL

WSDL (Web Services Description Language) is an XML format for describing Web Services.

To learn more about WSDL, read our WSDL tutorial.


WSDL 1.1

WSDL 1.1 was suggested in a note to W3C in March 2001 (by Ariba, IBM and Microsoft) as an XML format for describing Web Services.

The note also described how to use WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.

The W3C WSDL 1.1 document is only a NOTE available for discussion. The publication of the note indicates no endorsement by the W3C.


WSDL 1.2

The first working drafts were published 17. December 2001.

The latest working drafts were published 11. June 2003.


WSDL 2.0

The XML Protocol Working Group at W3C is currently working on WSDL 2.0.


Web Architecture

Simple Internet technologies are used to access the information space of the World Wide Web. These technologies are used to access information across languages, cultures, and media.

To preserve the properties of the World Wide Web as technologies evolve, W3C has created a recommendation for the core design components of the Web.

Architecture of the World Wide Web, Volume One is a W3C recommendation describing the standard protocols that support the identification of, and interaction between Web resources.


W3C Specifications and Timeline

Specification Draft / Proposal Recommendation
     
WSDL 1.1 Note 15. Mar 2001  
     
WSDL Usage Scenarios 04. Jun 2002  
WSDL Requirements 28. Oct 2002  
     
WSDL Architecture 11. Feb 2004  
WSDL Glossary 11. Feb 2004  
WSDL Usage Scenarios 11. Feb 2004  
     
WSDL 1.2 Core Language 11. Jun 2003  
WSDL 1.2 Message Patterns 11. Jun 2003  
WSDL 1.2 Bindings 11. Jun 2003  
     
WSDL 2.0 Primer   26. Jun 2007
WSDL 2.0 Core Language   26. Jun 2007
WSDL 2.0 Adjuncts   26. Jun 2007
WSDL 2.0 SOAP 1.1 Binding   26. Jun 2007
WSDL 2.0 RDF Mapping   26. Jun 2007
     
WS Addressing Core   09. May 2006
WS Addressing SOAP Binding   09. May 2006
     
Web Architecture   15. Dec 2004
     


W3C Reference:

W3C Web Services Home Page


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