Hi! From here http://docs.openlinksw.com/virtuoso/virtuosofaq13/ i’ve found, that it’s possible to add some extra data to triple… and create some kind of megaQuad :).
I need to store somewhere SingletonProperty Uri for storing metadata (in other words - id of every triple).
We use singleton property methodology from here https://www.slideshare.net/ntkimvinh7/www2014-singleton-propertyfinal .
Now we have such queries:
SELECT * WHERE {
GRAPH ?g {
?resourceUri ?spUri ?value.
?spUri rdf:singletonPropertyOf ?predicate.
}
}
But it would be so nice to have queries like this:
SELECT * WHERE {
GRAPH ?g {
?resourceUri ?predicate ?value ?spUri.
}
}
Is this possible to add some extra column to RDF_QUAD
and change base sparql pattern in virtuoso?
Give me the way, please