Re: major technical: no privilege model

I'd call this utterly outside of the scope of SPARQL.

Fine-grained privilege control for RDF is a hard, largely-unsolved  
problem.

-R

On 12 Jan 2006, at 13:44, Fred Zemke wrote:

>
> There is no security or privilege model.  I suppose this might be  
> construed
> that there is a very coarse-grained privilege, either a user can see
> a graph (ie, the implementation resolves the graph's IRI for the user)
> or not.  And implementations might take that a step further and
> arrange things so that one IRI might name a subgraph of another IRI.
> If the graph or the user community is large,
> the administrator will probably prefer the ability to control access
> with fine-grained privileges. For example, the administrator may  
> wish to
> grant or deny access to triples on the basis of the predicate, the  
> subject,
> the object, or perhaps by reachability from selected starting nodes.
> Fred Zemke
>