I downloaded the full RDF Freebase dump file 'freebase-rdf-2012-12-09-00-00.gz' (7.5GB) from this link http://download.freebaseapps.com/
This data dump uses the Turtle RDF syntax as defined here http://wiki.freebase.com/wiki/Data_dumps
How to upload this file to Virtuoso (04/06/3132)?
I tried to use this command
SQL> DB.DBA.TTLP_MT (file_to_string_output ('freebase-rdf-2012-12-09-00-00.gz'), '', 'http://freebase.com');
but ended in a short time. The following query returned only 2 lines (triples) from the source file and exceptions in the log.
SELECT ?a ?b ?c from <http://freebase.com> where {?a ?b ?c} http://rdf.freebase.com/ns/american_football.football_historical_roster_position.number http://rdf.freebase.com/ns/type.object.name Number http://rdf.freebase.com/ns/american_football.football_historical_roster_position.number http://rdf.freebase.com/ns/type.object.type http://rdf.freebase.com/ns/type.property. 2 Rows. -- 78 msec.
By the way, how long will it take to download such a large file (8 GB of RAM or 24 GB of RAM)?
Can this dump file be uploaded to TDB (via tdbloader), Sesame OpenRDF (via download), or to the OWLIM SE repository unchanged?
And will I get a response from my SELECT SPARQL queries (not very complex) after loading in a reasonable amount of time?
Thanks!
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