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Siebel CRM Web Services Reference > Siebel CRM Web Services Overview > Core Technologies for Web ServicesOracle's Siebel Web services use industry standard core technologies. The following topics provide an overview of each main core technology:
About Web Services Description Language (WSDL)WSDL is an XML-based format for describing the interface of a Web service. WSDL describes the endpoints, location, protocol binding, operations, parameters, and data types of all aspects of a Web service:
About XML and XML SchemaA WSDL file is published in the form of an XML document instance. Document or Literal is required as part of the WS-I interoperability standard that forms the basis of modern Web service usage, where:
When using Document/Literal formatting, the WDL file will contain an XML Schema definition that defines all messages and data types that will be used for a particular service. The payload itself will consist entirely of XML data structures. About Simple Object Access Protocol (SOAP)SOAP is a lightweight protocol intended for exchanging structured information in a decentralized, distributed environment. SOAP uses XML to define an extensible messaging framework. |
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