* Mark James > > The commercial version of virtuoso has a 'virtual database' capability. You > can create tables within virtuoso that are links to tables within other > rdbms. It's then possible to create rdf views and either materialize the > triples or query the rdbms data directly.
Thank you for this! It sounds like exactly what I need. After digging through the documentation for a while it seems that this the bit that's needed to materialize the views. http://docs.openlinksw.com/virtuoso/rdfperformancetuning.html#rdb2rdftriggers And, I guess, to keep track of what changes in the resulting RDF we create a snapshot log of RDF_QUAD using this: http://docs.openlinksw.com/virtuoso/SNAPSHOT.html#COMMANDS Based on that I think we can use SQL on the snapshot table to see what the changes are and produce an Atom feed of changes, plus fragments for individual changes. Does this sound reasonable, or am I barking up the wrong tree? --Lars M. http://www.garshol.priv.no/tmphoto/ http://www.garshol.priv.no/blog/
