Service Interface Artifacts
A service interface is defined by three artifacts.
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Service WSDL: Contains standard WSDL elements and annotations that describe the service metadata, display name and service, operation and operation payload elements.
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Service XSD: Defines request and response payload types in a separate XSD, which has the same name as the WSDL.
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Service Data Object XSDs: Defines the service data object as a complex type and the attributes as the elements in the complex type. An XSD also includes annotations for the entity display name as well as entity and attribute descriptions.