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Re: Which URI should be persistent when redirects are used?

From: Xiaoshu Wang <wangxiao@musc.edu>
Date: Sat, 29 Sep 2007 14:59:17 +0100
Message-ID: <46FE5A35.3060409@musc.edu>
To: Alan Ruttenberg <alanruttenberg@gmail.com>
CC: Misha Wolf <Misha.Wolf@reuters.com>, W3C-TAG <www-tag@w3.org>, semantic-web-ig list <semantic-web-ig.list@reuters.com>

Alan Ruttenberg wrote:
> An if this is the case, can we therefore conclude, by your 
> instruction, that same document has two URIs, i.e. that URI aliasing 
> is a necessary consequence of content negotiation?
The relationship between a "resource/thing" and a URI is not symmetric.  
One thing can have many URIs but a URI can only identify one 
"resource/thing".  In the web, we only work with URI -> representations, 
but not the other way around, right?

So, in your question, what is the exactly the "document" you have in 
mind?  A file on a remote server? Or a cgi script? Or something else?  
My point is: the question that you posted, i.e, if a "document" can have 
multiple URIs, is an implementation issue.  It is irrelevant to the Web 
architecture so you can freely infer anything.  What is important is 
what is identified by a URI, i.e., given a URI, what you can get back.


Received on Saturday, 29 September 2007 13:59:48 UTC

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