Re: usage of fourth quad element

On 7 December 2015 at 23:57, Kingsley Idehen <kidehen@openlinksw.com> wrote:

> On 12/7/15 12:55 PM, Gregg Kellogg wrote:
> > On Dec 7, 2015, at 8:31 AM, Ruben Verborgh <ruben.verborgh@ugent.be>
> wrote:
> >> >
> >> > Dear all,
> >> >
> >> > The Representation Task Force is working hard
> >> > on a spec for low-level RDF interfaces.
> >> > For this, we need your input!
> >> >
> >> > How do you use the fourth element of a quad?
> >> > In other words, quads have one more field
> >> > in addition to subject/predicate/object of triples,
> >> > so what are your use cases for it?
> > RDF.rb has changed from using "context" to "graph_name" for the 4th
> position. This is online with the usage to store the "name" in a name/graph
> pair within an RDF Dataset. It can hold a URI, BNode, or Variable.
> >
> > Gregg
> >
> +1
>
> It provides a hint to an RDF store/dbms in regards to internal document
> identifier (a/k/a named graph in SPARQL).
>

Kingsley, when you say "internal document identifier" does that imply an
HTTP document?  For example, could the 4th element in a quad be a WebID?
When would you use which?


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>
> Kingsley Idehen
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