Re: are schemas backward compatible?

komal mangtani <mkomal@bea.com> writes:

> like is schema written in CR format, compatible with WD format.
> so that a parser supporting CR format can also support WD format?

Namespace change == incompatibility.

I think there have been 4 namespaces:
        
http://www.w3.org/1999/XMLSchema        five or six Public WDs
http://www.w3.org/2000/08/XMLSchema     Last Call PWD
http://www.w3.org/2000/10/XMLSchema     CR
http://www.w3.org/2001/XMLSchema        PR and REC

I'm pretty sure the PWDs before Last Call were _not_ all backward
compatible, despite sharing a namespace.

The others (2000/08, 2000/10 and 2001) are definitely not
interoperable, forward or backward.

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2001, part-time member of W3C Team
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Received on Friday, 21 September 2001 16:47:14 UTC