[Zope3-dev] [DRAFT] local portlets and perspectives

[Michel Pelletier]

On Thu, 2005-08-25 at 04:10 +0200, Jean-Marc Orliaguet wrote:

> You would need a quadruple store in that case (see the previous mail) -

rdflib.Graph is actually a quadruple store.  Many users still say
TripleStore because that was the old class name, but most RDF systems,
rdflib included, have grown a concept called "context"  a quad-element
that lets you assign context to a triple, sparql calls this the
"source", and some people say that it is used to track the "provenance"
of a triple.  Perhaps this is similar to the triadiac relations.

> if you have (Subject, Predicate, Object) in RDF
> 
> here you have:
> - monadic relation: (first, predicate)
> - dyadic relation: (first, second, predicate)
> - triadic relation: (first, second, third, predicate)

Ok, so in RDF a dyadic relationship is (DocumentURI, dc:title, "Expense
Report"), what would a similar triadic relationship be?


-Michel