Resources: Specifications

XML
The specification for the eXtensible Markup Language, or XML, is administered by the World Wide Web Consortium (W3C). The second edition of the specification can be found here.

WSDL
The Web Services Definition Language, or WSDL, provides a grammar for the description of XML Web service interfaces using XML documents. The latest specification can be found in the form of a note to the W3C, here.

SOAP
The Simple Object Access Protocol provides the grammar for the messages used to submit requests to, and return responses from, XML Web services. The latest working draft for SOAP, version 1.2, is actually split into two parts. The first part, describing the envelope structure and transport binding, is here; the second, describing the SOAP encoding mechanisms and the specific binding to HTTP, is here.

XML Schema
XML Schema is a grammar specified by the W3C to describe the allowable content of other XML documents. SOAP messages, WSDL messages, and UDDI messages are all described using XML Schema documents. The XML Schema specification is split into three parts. A primer, which explains XML Schemas in terms of examples, can be found here. The mechanisms for the description of XML structures are described in this specification, and the different datatypes supported by XML Schema are defined here.

UDDI
The programmer's API for the Universal Description, Discovery, and Integration specification—the interface programmers can use to access an UDDI directory—can be found here. The data structure specification, describing the SOAP messages used to communicate with UDDI directories, may also be found here.



overview books ibm columns intel articles glossary learn more – industry news – specifications – standards – technologies contact us				XML The specification for the eXtensible Markup Language, or XML, is administered by the World Wide Web Consortium (W3C). The second edition of the specification can be found here. WSDL The Web Services Definition Language, or WSDL, provides a grammar for the description of XML Web service interfaces using XML documents. The latest specification can be found in the form of a note to the W3C, here. SOAP The Simple Object Access Protocol provides the grammar for the messages used to submit requests to, and return responses from, XML Web services. The latest working draft for SOAP, version 1.2, is actually split into two parts. The first part, describing the envelope structure and transport binding, is here; the second, describing the SOAP encoding mechanisms and the specific binding to HTTP, is here. XML Schema XML Schema is a grammar specified by the W3C to describe the allowable content of other XML documents. SOAP messages, WSDL messages, and UDDI messages are all described using XML Schema documents. The XML Schema specification is split into three parts. A primer, which explains XML Schemas in terms of examples, can be found here. The mechanisms for the description of XML structures are described in this specification, and the different datatypes supported by XML Schema are defined here. UDDI The programmer's API for the Universal Description, Discovery, and Integration specification—the interface programmers can use to access an UDDI directory—can be found here. The data structure specification, describing the SOAP messages used to communicate with UDDI directories, may also be found here.
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