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RE: Are people really using Identity constraints specified in

• To: "Hunsberger, Peter" <Peter.Hunsberger@S...>
• Subject: RE: Are people really using Identity constraints specified in XML schema?
• From: w3c@d...
• Date: Fri, 20 Aug 2004 11:48:12 -0400
• Cc: "Roger L. Costello" <costello@m...>, xml-dev@l...
• In-reply-to: <1E0CC447E59C974CA5C7160D2A2854EC097E7D@S...>
• References: <1E0CC447E59C974CA5C7160D2A2854EC097E7D@S...>
• User-agent: Internet Messaging Program (IMP) 3.2.2 / FreeBSD-4.8

Peter,

+1 on all points!

BTW - for those interested in delving more into the bowels of context - there is
a draft technical note on the <ebContext> mechanism over at the BPSS OASIS site
in the documents folder - (but you'll need to have member access).

Thanks, DW

Quoting "Hunsberger, Peter" <Peter.Hunsberger@S...>:

> w3c@d... writes:
> > 
> > Roger,
> > 
> > I don't buy into any of this layering of constraints!!
> > 
> > Look here - its 2004 going on 2005 and we're still all 
> > thinking like COBOL programmers.  COBOL had copybooks, C had 
> > .h files and structs, and Java has similar, and now XML is 
> > supposed to have XSD.  You can add EDI to the list too.
> > 
> > It's bogus IMHO.
> > 
> > The real way forward is to put *context* front and center.  
> > Context drives and is at the heart of the constraint checking 
> > - and being able to manage this and make it scalable.  
> 
> Hmm, talk about deja-vu, you must have been writing this at the same
> time I was writing my post to you.  However, I'd partially disagree that
> layering of constraints is bogus; it's just one implementation of
> context resolution.  I think what you really want to say is that   using
> a mix of technologies buys you nothing but extra complexity?
> 
> And just to reinforce the point in my other post (since I'm sure I lost
> it in excess verbiage).  Context drives more than just validation: it
> drives presentation, security and data retrieval as well.
> 
> <snip>other things that make sense</snip>
> 
> 
> 
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• References:
  • RE: Are people really using Identity constraints specified in XML schema?
    • From: "Hunsberger, Peter" <Peter.Hunsberger@S...>

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