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Re: Introduction to URIs (was RE: WebArch introduction, sort of)

From: Roy T. Fielding <fielding@gbiv.com>
Date: Mon, 26 Jan 2009 16:43:14 -0800
Message-Id: <A746398B-B936-4952-B892-3113845B4CC5@gbiv.com>
Cc: W3C TAG <www-tag@w3.org>
To: "Henry S. Thompson" <ht@inf.ed.ac.uk>

>>> From: Henry S. Thompson
>>> . . . .
>>>    _What's a URI and why does it matter?_
>>>      http://www.ltg.ed.ac.uk/~ht/WhatAreURIs/
>>>
>>> Feedback welcome,

Hmm, that reminds me ...

   'Representation' names a pair: a character sequence and a media type.

That's too simplified.  A representation is some amount of data and its
associated metadata that represents the state of some resource at a  
given
point in time [which resource and which point in time is usually  
indicated
outside the representation; e.g., in request method semantics, response
message status, and message metadata like the Date header field in  
HTTP].
The media type is only one of many metadata, and there certainly is no
requirement that the data be a "character sequence".  For example, a
JPEG picture of my dog is not a character sequence.

....Roy
Received on Tuesday, 27 January 2009 00:43:51 GMT

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