ael at star.le.ac.uk
Mon May 19 08:14:37 PDT 2003
The Registry should answer the question 'what are the column names for
resource X?', however that question might be phrased. Whether the registry
retains that data for the resource or retrieves it from the resource itself
when it is asked the question is entirely up to the registry builder.
> -----Original Message-----
> From: Marco C. Leoni [mailto:mleoni at eso.org]
> Sent: 19 May 2003 15:49
> To: Patricio F. Ortiz
> Cc: ucd at ivoa.net
> Subject: Re: MyUCDs
> Hi Patricio,
> one question about the point below:
> > Let me include here another element before the submission of a
> > query to the resource handling catalogues: The registry.
> > Any registry will contain metadata about the services
> listed, ie,
> > the catalogues.
> > The registry would know (among other things),
> > - catalogueName (possibly catalogueUniqueID)
> > - catalogueTitle
> > - catalogueKeywords
> > - catalogueAuthor
> > - number of columns
> > - number of records
> > - column names, UCDs, units
> > - name ID,MAIN ---
> > - RA POS_EQ_RA,MAIN h:m:s
> > - Dec POS_EQ_DEC,MAIN d:m:s
> > ....
> > - Vmag PHOT_JHN_V mag
> > - Bmag PHOT_JHN_B mag
> > - z REDSHIFT ---
> are you sure the Registry will include all these information?
> Perhaps "column names" and "units" will be resolved by the service
> provider, and not by the registry itself.
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