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   Re: [xml-dev] Finding the target of a RDDL document

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Tim Bray wrote:
> Eric van der Vlist wrote:
>>Sorry to ask such a trivial question, but if I read a RDDL document, how 
>>can I find its target?
> You can't.  At the moment there is no explicit "back-pointer" from
> a RDDL to the target it describes.  Jonathan and I talked about this
> but couldn't think of a good reason to have one.  But we didn't
> consider it that much; is there a good reason?

What's happening when you move a document? Isn't the document still the 
same? If so isn't it describing the same target?

Even without moving the document, the RDDL description for RDDL is 
located at http://www.openhealth.org/RDDL/ . Is it describing 
http://www.rddl.org/ or http://www.openhealth.org/RDDL/ ?

I think that the whole system would be more robust and easy to use if 
the target was explicitely mentioned.

>>I like RDDL a lot, but I am wondering if it's not misusing simple XLink 
>>here since after http://www.rddl.org/ has been redirected to 
>>http://www.openhealth.org/RDDL/ , my understanding is that when I read:
>><rddl:resource xlink:type="simple"
> ... etc ...
>>this is describing a link between the rddl:resource element of the 
>>http://www.openhealth.org/RDDL/ XML document and the document 
>>http://www.rddl.org/natures rather than a link between 
>>http://www.rddl.org/ and http://www.rddl.org/natures.
> No, if you go and read the introduction to the RDDL spec, it states
> clearly that the links are from the descriptions of the related resouces
> to the related resources being described.  We re-wrote the intro because
> of precisely the question you just asked. -Tim

I have re-read the introduction and I see what you mean. It meets the 
requirement "what's behind a namespace URI?", but doesn't meet the 
common usage of resources discovery on the web: if I find a web page by 
any mean I like to be able to tell what this page is about.

When I find a RDDL document, I need to be a human being to have a chance 
to tell what that's about, it's very frustrating for web crawlers like 
the one I intend to present at XML Europe 2002 :) !

See you in Paris.
Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
http://xsltunit.org      http://4xt.org           http://examplotron.org


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