Re: Access XML
On Thursday 20 March 2003 11:22, John Cowan wrote: > Alaric B. Snell scripsit: > > ...making a URN namespace that looks like: > > > > urn:domain:alaric-snell.com:wibble > > > > ...would make sense IMHO; the rules being that the owner of a domain in > > DNS can generate URNs as she sees fit that follow the rule > > The trouble is that domain names can and do change hands, So can any kind of registry entry. > and there is > no protection against different owners issuing colliding URNs. No system has any such protection unless you mandate digital signature based protections; if a name is published, then anyone else can decide they're going to use the same name for something else. > So a > date has to be involved, and IMHO should be involved in *every* namespace > name, whether URL or URN, where the DNS is being relied on at all. That's moving towards a 'big ugly number' scheme - where lots of numeric data are pushed together to ensure uniqueness. UUIDs are the best example of these in commmon use; they would make good URNs in many ways, but are a bastard to remember :-) ABS -- A city is like a large, complex, rabbit - ARP
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