Hi!
In Blazegraph, this could be supported by Quads or RDR
(Reification Done
Right).
We considered using RDR but decided against it because RDR is not
standard and existing tools and libraries would not understand it. So in
the interest of better data integration we decided to use regular RDF
representation that can be queries by standard SPARQL.
One possible approach using triples for the use case
could be to assign
a blank node to a reference placeholder and introduce the valid range
class for prov:wasDerivedFrom (prov:entity) with the canonical reference
UUID like this:
I'm not sure I understand - what would doing this earn us? This looks
like just adding one more join to the lookups.
--
Stas Malyshev
smalyshev(a)wikimedia.org