[QUANTITY] and [OBSERVATION] data models: new drafts

[Pierre Didelon]

Jonathan McDowell wrote:

> Dear IVOA DM Group,
> 
>   In late 2003 we were drowning in emails which were not remotely
> converging. I took advantage of the co-location of a number of mailing
> list participants in a couple of meetings in January  to try and build a core
> consensus on Quantity and Observation with a small team representing a
> spread of views in a face-to-face discussion. We now have individuals
> from more than one institution agreeing (mostly agreeing, anyway) on a
> model, which is progress. 
> 
> The results so far have now (at last!) been written up as a set of  WG
> Internal Drafts. 
> 
> The documents are now on the IVOA TWiki at 
>  http://www.ivoa.net/twiki/bin/view/IVOA/IvoaDataModel
> specifically at
>  http://www.ivoa.net/internal/IVOA/IvoaDataModel/qty.v0.2.ps  (or pdf)
>  http://www.ivoa.net/internal/IVOA/IvoaDataModel/obs.v0.2.ps  (or pdf)
...
> 
> Meanwhile, I encourage comments on the new drafts, particularly
> if those comments suggest specific changes to make to parts of the text
> you don't like.
> 
>    - Jonathan McDowell
> 
> 
Hi,
it seems (at least to me) to be a good idea to restrict Quantity def to it's 
interface. XML serialization is then the most important part of the job, and
I am asking myself if in this case, an XMLSchema or DTD is not needed
to formalize the serialization?
sincerely yours,

-- 
Pierre 
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DIDELON                               e-mail : pdidelon_at_cea.fr
CEA SACLAY - Service d'Astrophysique  W3 : http://www-dapnia.cea.fr/Sap/
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