Using the “commercial” use of semantics, is is possible in equanda to automatically generate a data model ontology. This is exported as a OWL file.
The main use for this is to generate a graphical representation of the data model. Such an owl file can be displayed in Protégé, which (after enabling the Jambalaya plugin in the project properties tab) can generate a graph like the one below.
This exercise has indicated some strange facets of the OWL file format. While you would assume that a triple (A,X,B) and a triple (C,X,D) would result in two arcs, one from A to B and one from C to D. This is not true, it also generates arcs from A to D and from C to B. Apparently you have to assure that the relations have unique names. This does make the relation names which equanda generates less nice, but at least it works.