How is OWL actually used when building a semantic web application?

Question

I\'ve been reading about semantic web technologies such as RDF and OWL, and am intrigued about the possibilities of building an RDF / triple-store semantic database on top of my

Answer 1

There are numerous triplestores that use a relational db for the back end.

Check out Apache Jena and openrdf Sesame for triplestores that have both rdbms and "native" (pure triples) backends.

Also, I highly recommend looking at D2RQ which accesses data in your existing relational store through a triplestore overlay.

There are longer lists but those are good starting points.