OWL/RDF representation includes following files

- Purpose and focus of the RDF representation in the DDI 4 prototype: "OWL Representation.pdf"
- OWL ontology (as XML) for the whole DDI 4 model: "DDI_4-DR0.2-OWL.xml"
  This file can be explored for example in the software Protégé (https://protege.stanford.edu/).
- OWL documentation (as HTML): "DDI4 Schema.html" (related directory "DDI4 Schema_files")
- RDF examples in directory: "RDF_Examples"
- ShExC file (for validation purposes): "DDI_4-DR0.2.shex"
- README on Shape Expressions: "README on Shape Expressions.html"
- The documentation on the transformation rules from the DDI 4 model (as Canonical XMI) to OWL: "mapping from UML models to RDF models.html"
