- From: Bijan Parsia <bparsia@cs.man.ac.uk>
- Date: Fri, 24 Oct 2008 10:14:54 +0200
- To: Owl Dev <public-owl-dev@w3.org>
Issue 147 proposes union datatypes (i.e., integer OR string). XML schema already has a sort of union datatype: http://www.w3.org/TR/xmlschema-2/#dt-union We're not going to use the XSD union (at least its semantics). (Everything I say is a bit provisional the moment as I've not spelunked in any formal semantics.) Intuitively, XML Schema union vs what we want is a bit like union in SPARQL vs. unionOf in OWL. I hope. I was looking for backup on this and am not immediately finding it. It depends on the problem one is considering (i.e., recognition vs. schema consistency checking). So I was bit glib in my assertion that one *couldn't* reuse union, but maybe it's just easier not to use it? Cheers, Bijan.
Received on Friday, 24 October 2008 08:15:33 UTC