- From: Stephen Buxton <Stephen.Buxton@oracle.com>
- Date: 16 Feb 04 11:52:27
- To: public-qt-comments@w3.org
- Cc:
SECTION 2.6.6.1: XQuery flagger Besides flagging must-understand extensions, the flagger should call out any vendor extensions that are not must-understand extensions. Such extensions are probably inevitable (my prediction is that vendors will find the must-understand extension syntax too lengthy for their favorite extensions). In addition, you have not specified "no supersetting" as was done for Ada. The first sentence of section 2.6.6 "Must-understand extensions" says "an implementation may extend XQuery functionality by supporting must understand extensions." This does not say "an implementation may not extend except through must-understand extensions". Even if you had such a sentence, vendors will still be tempted to add extensions, and you lack the buying power of DoD to enforce a "no supersetting" rule. - Steve B.
Received on Monday, 16 February 2004 14:52:30 UTC