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RE: Designing XML to Support Information Evolution

• To: "Robert Koberg" <rob@k...>,"Michael Kay" <michael.h.kay@n...>
• Subject: RE: Designing XML to Support Information Evolution
• From: "Hunsberger, Peter" <Peter.Hunsberger@S...>
• Date: Fri, 21 May 2004 09:14:35 -0500
• Cc: "Rick Marshall" <rjm@z...>,"xml-dev DEV'" <xml-dev@l...>
• Thread-index: AcQ/NPf+OpfgDVucSDqJaO/fIx3UiQACFIJg
• Thread-topic: Designing XML to Support Information Evolution

Robert Koberg <rob@k...> writes:

> 
> Michael Kay wrote:
> 
> >>hmmm... isn't the internet a hierarchy? has that failed?
> > 
> > 
> > If the internet is a hierarchy, can you tell me how to find 
> the root?
> 
> A quick google turned up:
> 
> http://www.support.psi.com/support/common/inet-serv/dns/hierarc.html
> 
> 
> "The Domain Name System is a distributed hierarchical system for 
> resolving host names into IP addresses. The DNS has a root domain at
the 
> top of the hierarchy and directly under are the top-level domains. The

> root of the tree has no name. All siblings of a domain must have
unique 
> names. Children of a domain are called subdomains of the parent."

I'd note a couple of things: 1) DNS is only one part of what makes the
Internet the Internet (though arguably rather important for all the web
surfers who wouldn't know an IP address from a telephone number); 2) the
DNS root is more virtual than anything else, there's no requirement for
it being present at any given point in time.  If it's a hierarchy it's
unlike any other hierarchy I've ever encountered.

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