Building Ontologies by using Re-engineering Patterns and R2RML Mappings.

The ontologization of non-ontological resources has led to the design of several specific methods, techniques and tools. Among those techniques, we have the Re-engineering Patterns. More specifically, we have the Patterns for re-engineering NORs (PR-NOR) that define a procedure that transforms the NOR terms into ontology representational primitives. Currently, the W3C RDB2RDF Working Group is at the final stage of formalizing R2RML, a language for describing mappings among RDB elements and RDF. In this paper we claim that it is possible to combine PR-NORs with R2RML mappings for building ontologies from relational database content, i.e., transforming the database content into an ontology schema by using Re-engineering Patterns and R2RML mappings.