Re: Deleting subgraphs via SPARQL

Thomas B. Passin wrote:

> 1) A reified statement is not the same as the corresponding statement
> made up of those three elements (subject, predicate, object).  So
> asserting something about the reified statement is not - within the
> standard rdf model - changing anything about the actual triple in the
> data store.
> 
> 2) Many, if not most, rdf engines are going to create a bunch of
> statements that are supposed to be inferred, based on some given triple
> that is inserted into the data store.  How you you going to account for
> them?
> 
> Kind of clouds the issue, doesn't it?

Don't forget the problems that an erroneous assertion can make if
it happens to be for an IFP!

Difficult issues. But in answer to Danny's original query, why not just 
DELETE * WHERE ....?

Cheers,

L.

-- 
Home: http://www.ldodds.com     | "Simplicity is the ultimate
Blog: http://www.ldodds.com/blog|   sophistication" -- Leonardo da Vinci

Received on Thursday, 23 June 2005 08:16:41 UTC