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W3C WSDL Activity
WSDL is an XML-based language for describing Web Services and how to access Web Services.
WSDL
WSDL (Web Services Description Language) is an XML format for describing Web Services.
To learn more about WSDL, please read our WSDL Tutorial.
WSDL 1.1
As an XML format for describing Web Services, WSDL 1.1 was suggested to W3C in a Note on March 15, 2001 (by Ariba, IBM, and Microsoft).
This Note also described how to use WSDL with SOAP 1.1, HTTP GET/POST, and MIME.
The W3C WSDL 1.1 Note is merely a discussion document (NOTE). The publication of this Note does not imply any endorsement by W3C.
WSDL 1.2
The first Working Draft was published on December 17, 2001.
The latest Working Draft was published on June 11, 2003.
WSDL 2.0
The W3C XML Protocol Working Group is currently working on WSDL 2.0.
WEB Structure
The core of the Web structure is a Web server, which is usually carried out by an independent server, with the database server serving as the information management system database server. All data requests from clients are submitted to the database server via the Web server, and then returned by the Web server to the requesting client.
The Web server here can be set as a gateway, one end connected to the internal network of the information management system, and the other end connected to the enterprise Intranet. This avoids the internal network being directly exposed to the outside while allowing internal access to the Web site.
W3C WSDL Specifications and Timeline
| Specification | Draft/Proposal | Recommendation Date |
|---|---|---|
| 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 | |
| Web Services Addressing Core | 09. May 2006 | |
| Web Services Addressing SOAP Binding | 09. May 2006 | |
| Web Architecture | 15. Dec 2004 |