Dave Reynolds kirjoitti 16.11.2017 klo 13:42:
If a TDB image only has a default graph, no named graphs at all, then it
acts a triple store and only needs the three SPO, POS, OSP indexes. In
that configuration it doesn't generate the graph indexes at all.
As soon as you have one named graph (even if small) then it acts as a
quad store and needs all 9 indexes (GOSP etc). The extra indexes take
more space, even if the underlying quad count is the same as the triple
count in default-only case.
Okay. But if I load the big dataset into the default graph, then load a
very small dataset into a named graph, the size doesn't change. It's
still around 5GB.
-Osma
--
Osma Suominen
D.Sc. (Tech), Information Systems Specialist
National Library of Finland
P.O. Box 26 (Kaikukatu 4)
00014 HELSINGIN YLIOPISTO
Tel. +358 50 3199529
[email protected]
http://www.nationallibrary.fi
