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   Re: [xml-dev] WD for Namespaces 1.1

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From: "Tim Bray" <tbray@textuality.com>
 > I'm sorry, I just don't buy it.  I use XML all the time 
> on my laptop sitting on airplanes with no internet connection.
> There is nothing whatsoever about XML that restricts its use
> to the WWW platform.  The use of URIs is for (a) system
> identifiers and (b) namespace names.  For (a), you can use
> "file:" URLs or even relative URIs and operate just fine
> away from the network; or you can use entity resolution
> catalogs to the same effect.  For (b), the correct function
> of namespaces does *not* require their resolution - 
> dereferencing is clearly an extra which some (not all) 
> consider desirable.
> XML's only platform dependency is on a computer facility that 
> is able to store, retrieve, and process sequences of characters
> in some encoding of Unicode.  -Tim

My concrete example was of a file inside a (say ZIP) archive.

There is no URL scheme for this AFAIK. You cannot use file: for
it when you are sitting on a plane or connected to the internet.
Unless some scheme is devised and implemented, or a CGI script
or query script installed, that data is not accessible by a system
identifier. That data is not accessible because the platform (WWW
URLs) does not support it (at that time and place).   

Rick Jelliffe


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