- From: Michael Kifer <kifer@cs.sunysb.edu>
- Date: Sun, 28 May 2006 03:25:58 -0400
- To: "Peter F. Patel-Schneider" <pfps@inf.unibz.it>
- Cc: public-rif-wg@w3.org
> From: Michael Kifer <kifer@cs.sunysb.edu> > Subject: Re: A proposal for a unitary RIF phase 1 > Date: Sat, 27 May 2006 19:34:17 -0400 > > > Peter, > > > > It is no big deal to be unitary by restricting the language to Datalog. > > You don't even need to limit it to a function-free sublanguage. In our > > roadmap the language was unitary also up to this point. > > OK. > > > The issue is how to build such a system in an extensible way so that it > > could be extended to satisfy most of the RIF requirements. > > Well, this is at least one of issues. However, I don't see any particular > preference for divergent semantics here. I am not sure if I understand you here correctly, but what I meant was that anything we do in Phase 1 needs to have a clear path to enabling further extensions. These planned extensions will most likely influence Phase 1 because, for example, we need a way to say what the syntax and semantics of a rule set is intended to be. Even though this might seem unnecessary in the unitary world, this same rule set will have to live in a Phase 2 world with other semantics, so it must be prepared to declare its characteristics in that larger context. --michael
Received on Sunday, 28 May 2006 07:26:09 UTC