My mistakes

Web Services Description Language (WSDL),Universal Description Discovery and Integration (UDDI)

Posted on: November 8, 2007

Universal Description, Discovery and Integration (UDDI) is a platform-independent, XML-based registry for businesses worldwide to list themselves on the Internet. UDDI is an open industry initiative, sponsored by OASIS, enabling businesses to publish service listings and discover each other and define how the services or software applications interact over the Internet. A UDDI business registration consists of three components:

  • White Pages — address, contact, and known identifiers;
  • Yellow Pages — industrial categorizations based on standard taxonomies;
  • Green Pages — technical information about services exposed by the business.

UDDI was originally proposed as a core Web service standard[1]. It is designed to be interrogated by SOAP messages and to provide access to Web Services Description Language documents describing the protocol bindings and message formats required to interact with the web services listed in its directory.

Web Services Description Language is an XML-based language that provides a model for describing Web services.WSDL is often used in combination with SOAP and XML Schema to provide web services over the Internet. A client program connecting to a web service can read the WSDL to determine what functions are available on the server. Any special datatypes used are embedded in the WSDL file in the form of XML Schema. The client can then use SOAP to actually call one of the functions listed in the WSDL.

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