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Yehuda Shiran November 6, 2001
Web Service WSDL -- Elements
Tips: November 2001

Yehuda Shiran, Ph.D.
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 A Web service's interface is covered in its WSDL format. A WSDL document always has a definitions element as its root. Any WSDL language element can contain the documentation element. The WSDL-specific elements are:

  • Types: Describes the types used by messages.
  • message: Defines the data passed from one point to another in a call.
  • portType: Defines a collection of operations.
  • operation: Defines a combination of input, output, and fault messages
  • input: A message that is sent to the server
  • output: A message that is sent to the client
  • fault: An error value returned as a result of a problem processing a message
  • binding: Describes the protocol being used to carry the Web service communication. Supported protocols are: SOAP, HTTP GET, HTTP POST, and MIME
  • service: Defines a collection of ports; each service should map to one portType and represent different ways of accessing the operations in that portType.

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