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Re: How to represent links within XML & XSD?

From: Joseph Kesselman <keshlam-nospam@-------.--->
To: NULL
Date: 5/5/2006 1:02:00 PM

akunal@g... wrote:
> The biggest failing of ID/IDREF is that the link has no way of
> expressing any semantic value as to why the relationship was
> established.

Not entirely true; that's a matter of how you design your document. 
Remember, the IDREF doesn't exist in a vacuum; its context may provide 
additional information.

Keys, defined in the Schema spec, are a more flexible alternative to IDs 
and (because there are multiple key spaces rather than a single shared 
space for all IDs) may be more felxible in this regard.

> ID/IDREF can't express bi-directional links.

True.

> I was reading up on XLinks

XLink is indeed a much richer mechanism. There still isn't much 
off-the-shelf support available for it, unfortunately, so actually using 
it productively can be a challenge. And you did way you didn't want to 
write additional code.


-- 
Joe Kesselman / Beware the fury of a patient man. -- John Dryden


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