[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Real needs XML Schema must address (was re: W3C XML Schema Question
At 01:32 10/07/2000, Rick JELLIFFE wrote: >Michael Champion wrote: > > > > ----- Original Message ----- > > > > Rick Jelliffe wrote: > > > > > One can evaluate XML Schemas on general terms as a universal schema > > > language. But it is more important at this stage, IMHO, to evaluate it > > > in terms of its sufficiency for meeting the pressing needs of the day as > > > the bottom line. > > > > Absolutely. Let's enumerate and discuss them. > > > > I think everyone agrees that an XML Schema spec must: > > > > - Allow schemas to be defined in XML syntax > > - Support the functionality of DTDs, more or less > > - Improve the data typing beyond what DTDs support > > - Allow namespace-aware validation > > > > (dissent?) > >I think that is where things get into a waffly hole: defining the the >requirements for XML Schemas in terms of technologies rather than domain >requirements. If XML Schemas supports scientific data well but not >ecommerce adequately, is that OK; if XML Schemas supports ecommerce well >but not XHTML, is that OK; if XML Schemas supports XHTML well but not >SOAP is that OK? I'm going to go one step further: the requirements for XML Schemas should be defined in order to meet specified use cases. These use cases detail real-world problems that are to be solved by the schemas. I think that domain requirements are better than technology requirements, but they are still far too abstract for my liking. So why don't we start with a fully-worked-out set of concrete examples, and work back from there? This would help to avoid the problem we've had with a number of the specs so far: Build a solution, but don't define how it should be used in reality. Everyone then goes off and does something different ... and we're back to square one. J ------------------------- James Robertson Step Two Designs Pty Ltd SGML, XML & HTML Consultancy Illumination: an out-of-the-box Intranet solution http://www.steptwo.com.au/ jamesr@s... *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ ***************************************************************************
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