- From: Chris Purcell <chris.purcell.39@gmail.com>
- Date: Thu, 23 Jun 2005 09:22:33 +0100
- To: Leigh Dodds <leigh@ldodds.com>
- Cc: semantic-web@w3.org, "Thomas B. Passin" <tpassin@comcast.net>, Danny Ayers <danny.ayers@gmail.com>
>> 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. What if I DELETE, not a previously-inserted statement, but an inferred one? Should the engine reinfer it, turning the DELETE into a no-op? Chris
Received on Thursday, 23 June 2005 08:22:39 UTC