http://www.theregister.co.uk/2012/04/03/ibm_db2_10_infosphere_10/
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The Apache Jena project is a Java framework for building semantic web
applications based on graph data, and Apache Fuseki is the SPARQL server
that processes the SPARQL queries and spits out the relationships so
they can be visualized in some fashion. (Cray's new Urika system,
announced in March, runs this Apache graph analysis stack on top of a
massively multithreaded server.)
Just like they imported objects and XML into the DB2 database so they
could be indexed and processed natively, IBM is now bringing in the RDF
format so that graph triples can be stored natively.
As IBM explains it – not strictly grammatically, to some English majors
– a triple has a noun, a verb, and a predicate, such as Tim (noun) has
won (verb) the MegaMillions lottery (predicate). You can then query all
aspects of a set of triples to see who else has won MegaMillions – a
short list, in this case.
In tests among DB2 10.1 early adopters, applications that used these
graph triples ran about 3.5 times faster on DB2 than on the Jena TDB
data store (short for triple database, presumably) with SPARQL 1.0
hitting it for queries.
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(Dear Reg, TDB does not stand for "triple database")
Andy
