RDB2OWL: A Language for database to OWL mapping and its implementation

Abstract

Most data in industry still resides in relational databases (RDB) but Semantic web uses standard RDF and OWL formats. We consider a previously developed mapping language RDB2OWL allowing compact and end-user readable mapping specification. We describe the RDB2OWL implementation by translation into R2RML standard language that avoids the view rowset multiplication due to several 1-To-n relations from a single class in the ontology.