content, format, ctype, or xtype ?

[Francois Ochsenbein]

Yes it has to do with a semantic content of the field, but
the 'utype' that I tried to propose several times does not
seem to be satisfactory to TAP . There are 2 cases currently
"iso8601" and "stc-s" to specify time stamps and STC expression.

Personnally I still would prefer the 'utype' which has the
advantage of being more accurate in its definition, and is
versionable...

-- Francois

>
>Hi Francois -
>
>It would help to have a list of common "data representations" which
>we are trying to characterize with this attribute.  I originally
>thought it was the numerical format, but it now sounds like it may be a
>broader concept having to do with the semantic content of the field.
>If we just list all the currently forseen values, perhaps we can
>identify the concept.  What is "x"?.
>
> 	- Doug
>
>
>On Sun, 3 May 2009, Francois Ochsenbein wrote:
>
>>
>> Hi Pat, Mark, Doug,
>>
>> I would like to come to a final wording for the new attribute
>> in VOTable which would specify the data representation of
>> columns having a special meaning like STC-S or time. None of
>> the various propositions (encoding, format, content, ctype)
>> got real support; it seems that 'content' was felt as a
>> bit more acceptable than the other terms. A last proposal
>> could be 'xtype' (some condensed way of "expression type")
>> would that be acceptable for tap ?
>>
>> See you soon,
>> Francois
>>

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Francois Ochsenbein    ------   Observatoire Astronomique de Strasbourg
   11, rue de l'Universite 67000 STRASBOURG  Phone: +33-(0)390 24 24 29
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