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Len Bullard <cbullard@h...> 12/15/99 07:09 PM To: Tim Bray <tbray@t...>@SMTP@Exchange Tim Bray wrote: > > At 11:04 AM 12/14/99 -0500, Clark C. Evans wrote: > >It'd still be nice to have a single database with > >everyone's namespace definitions in one place though... > >perhaps even a DTD to help describe them. I'm sure > >there are organizations doing this... are there? > > Yes, lots. That's the problem. -Tim > No Tim, that's the answer. Common goals achieved by > common means, not common control. Put the definitions in I didn't take Tim to be arguing against decentralisation, but against the multitude of companies/organisations who both promote the centralised monolithic (meta)data registry approach, and (coincidentally) attempt to promote themselves as providing that service. One of the supposed big wins of using the same syntax/model for our meta-languages and our instance data is re-use, synergy. Eg. if RDF and XML vocabularies are themselves described using RDF and XML, then generic discovery/indexing/trust systems applicable to _all_ XML/RDF content should be equally applicable to schemas. Why then promote centralised registries for all schemas? Surely there will be search engines and 'trusted third parties' for schema data, as there will be for other applications of XML and RDF. By defining schema languages in instance syntax, we implicitly promote the idea that there will be some big payoff for doing so (otherwise, lets stick with DTDs). Some synergy that means generic tools will be applicable to schemata. I find this impossible to reconcile with the www.really-important-trusted-metaregistry.[com|org] approach that seems popular in the industry. I'm banking on doing schema searches at the mainstream search engines in 2-3 years time... Dan -- daniel.brickley@b... xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To unsubscribe, mailto:majordomo@i... the following message; unsubscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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