8.2. Web Services Standards
Web Services specifications offer a communication bridge between the heterogeneous computational environments used to develop and host applications. We met them in Chapter 1.
XML is, of course, the root standard for the entire SOA enterprise. All web services standards and several business process modelling standards build on it in some ways. XML is documented in various good textbooks; Harold and Means (2004) is a popular one. The other chief standards are WSDL, SOAP and UDDI. In addition there is a whole family of WSDL-based standards for things such as security, reliable messaging and so on, usually referred to as*. Specifications for these can be found on the W3C site (www.w3.org).
Here are the other relevant sites.
WSDL: http://www.w3.org/TR/wsdl
SOAP: http://www.w3.org/TR/soap/
UDDI: http://www.oasis-open.org/committees/uddi-spec/doc/tcspecs.htm
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