Semantic Annotation of XML-Schema for Document Transformations

The W3C recommendation Semantic Annotations for WSDL and XML-Schema (SAWSDL [7]) has the primary goal of annotating web service descriptions with a semantic model. In addition to the annotation of WSDL documents it can also be used to annotate arbitrary XML-Schemas. In this paper we will discuss the application of SAWSDL to create declarative annotations of XML-Schema. We will show problems that arise and present a solution that creates SAWSDL compliant annotations with the required expressiveness. Such an annotation method can then be used to assist automatic document transformations between different schemas. The transformations can act as an enabler for inter-operable applications that exchange XML-documents.