Re: [Bigdata-developers] Bulk loading into bigdata

[Rose B. <ros...@gm...>]

Dear Bryan,

Probably I am new to the field. But since you are an experienced
person in the field, therefore can you please help me understand that:
when we apply RDR mechanism to triples, then what is the practical
use-case application of using named graph mechanism? I mean I
understand intuitively but I still am not able to get the practical
significance of using named graphs.


Thanks & Regards,
Rose

On Mon, Oct 6, 2014 at 8:02 PM, Bryan Thompson <br...@sy...> wrote:
> 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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