R2O, an extensible and semantically based database-to-ontology mapping language
Jesús Barrasa Rodríguez, Óscar Corcho, Asuncíon Gómez-Pérez · Facultad de Informática (UPM) eBooks · 2004
We present R2O, an extensible and declarative language to describe mappings between relational DB schemas and ontologies implemented in RDF(S) or OWL. R2O provides an extensible set of primitives with welldefined semantics. This language has been conceived expressive enough to cope with complex mapping cases arisen from situations of low similarity between the ontology and the DB models.