John A. Kunze wrote:
>
> I think your report on the Relation semantics is very clear.
> One missing piece is that the resources on either side need
> to be explicit. Currently we only make the second resource
> explicit (by using its identifier), while the first or
> "present" resource (the resource being described) is implicit.
> This seems to me missing in our discussion and in the basic
> DC RFC (#1).
>
> There's no problem in situations where the implicit first
> resource is obvious, as in the embedded metadata case.
> But it's definitely a problem in the non-embedded case
> because we haven't left a place in either Relation
> or Source for the first resource to be indicated.
I believe that this is a fundamental consequence of
allowing all DC elements, *including* *Identifier*,
to be optional. If an Identifier element is present,
then the present resource is clear.
--
__________________________________________________
Dr Simon Cox - Australian Geodynamics Cooperative Research Centre
CSIRO Exploration & Mining, PO Box 437, Nedlands, WA 6009 Australia
T: +61 8 9389 8421 F: +61 8 9389 1906 [log in to unmask]
http://www.ned.dem.csiro.au/SimonCox/
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