Is there functionality in Virtuoso for doing ETL from relational data to RDF? I looked at RDF Views, but it doesn't seem to be what we want, and there don't appear to be any spongers for this purpose. I did find a blog post about the subject that seemed to imply that ETL was not the preferred approach in Virtuoso.
The reason we want to do this is that we want to expose a big RDBMS as an SDshare[1] feed, for aggregation on another server. So, basically, what we need is an RDF view of the data (materialized or not) plus information about what has been changed in the database recently. Theoretically, we could just add triggers and changelog tables to the database and do it all ourselves, but I was wondering whether there was some way to do this with Virtuoso. Anyone have any ideas? [1] http://www.egovpt.org/fg/CWA_Part_1b --Lars M. http://www.garshol.priv.no/tmphoto/ http://www.garshol.priv.no/blog/
