Re: [Bigdata-developers] Bulk loading into bigdata

[Bryan T. <br...@sy...>]

The purpose of RDR is to permit statements about statements.

The purpose of named graphs is to allow statements to be collected into
containers.

With RDF* support for named graphs, you could do both.

Whether or not this is a good idea is an interesting question.  Consider,
that named graphs could be interpreted as just a special case of a
statement about a statement where the database then applies special
indexing (typically by maintaining additional indices for fast access by
the named graph).

For example, given:

<<:a :b :c> :namedGraph :d>

If we assume that ":namedGraph" has the semantics of the SPARQL named
graphs mechanism, then this RDR assertion says that the statement :a :b :c
exists in the named graph :d.

If so, then the RDR mechanisms always apply to triples and the named graphs
mechanism just specifies the containers within which a given triple
(including an RDR triple) is visible.

Thanks,
Bryan

----
Bryan Thompson
Chief Scientist & Founder
SYSTAP, LLC
4501 Tower Road
Greensboro, NC 27410
br...@sy...
http://bigdata.com
http://mapgraph.io

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On Mon, Oct 6, 2014 at 10:19 AM, Rose Beck <ros...@gm...> wrote:

> Dear Bryan,
>
> Thanks for the enlightening write-up about RDR. But I have a question
> in the write-up you wrote "In the future, we plan to add support for
> RDF* and SPARQL* to the quads mode of the platform as well. This will
> allow statement level metadata to co-exist seamlessly with the named
> graphs model." But I dont understand the need for supporting RDF* and
> SPARQL* in quads mode. I mean I dont understand as to why do we need
> to allow statement level metadata to co-exist with named graph model.
> Can you please explain this with an example.
>
>
> Thanks & Regards,
> Rose.
>
> On Mon, Oct 6, 2014 at 5:59 PM, Bryan Thompson <br...@sy...> wrote:
> > I've added a page to the wiki based on that blog post:
> >
> > wiki.bigdata.com/wiki/index.php/Reification_Done_Right
> >
> > Thanks,
> > Bryan
> >
> > ----
> > Bryan Thompson
> > Chief Scientist & Founder
> > SYSTAP, LLC
> > 4501 Tower Road
> > Greensboro, NC 27410
> > br...@sy...
> > http://bigdata.com
> > http://mapgraph.io
> >
> > CONFIDENTIALITY NOTICE:  This email and its contents and attachments are
> for
> > the sole use of the intended recipient(s) and are confidential or
> > proprietary to SYSTAP. Any unauthorized review, use, disclosure,
> > dissemination or copying of this email or its contents or attachments is
> > prohibited. If you have received this communication in error, please
> notify
> > the sender by reply email and permanently delete all copies of the email
> and
> > its contents and attachments.
> >
> >
> > On Sun, Oct 5, 2014 at 5:27 PM, Rose Beck <ros...@gm...> wrote:
> >>
> >> Dear all,
> >>
> >> I have downloaded bigdata.war and have deployed it using sesame HTTP
> >> API. Now I am not getting as to how should I load rdf
> >> triples/provenance with triples to bigdata using nanosparqlserver? I
> >> am using sesame HTTP API (using apache tomcat). Can someone please
> >> help.
> >>
> >> I intend to use mysql, native java and postgres with sesame. Any help
> >> will be deeply appreciated.
> >>
> >> Regards,
> >> Rose
> >>
> >>
> >>
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