Error column in VOResource
Tony Linde
ael at star.le.ac.uk
Tue May 18 07:50:44 PDT 2004
VOTable is not included in VOResource because VOTable is crap at
representing metadata. I agree with Ray that we want to limit metadata creep
for the moment because until we get the DM resolved and have a way of
representing the DM as a schema, we shouldn't increase the metadata in the
registry.
When we do have a decent way of representing metadata then I think the
registry should provide an interface for returning all metadata from a
resource and all that metadata should be in VOResource format - but that
will simply 'include' it from the DM schema.
T.
> -----Original Message-----
> From: owner-registry at eso.org [mailto:owner-registry at eso.org]
> On Behalf Of Roy Williams
> Sent: 18 May 2004 15:37
> To: Martin Hill; registry at ivoa.net
> Subject: Re: Error column in VOResource
>
>
> > Would it be a good idea to include a reference to the
> associated error
> > column in a column's description? eg:
>
> But what happens when there is an error ellipse, RA, Dec, and
> the three components RA.RA and Dec.Dec and RA.Dec of the covariance.
>
> What we have thought of in VOTable is an adjunct structure
> written in RDF that expresses relationships between the
> columns, betwwen the columns and UCDs and other relationships.....
>
> In fact, looking at your XML, may I politely ask why you have
> chosen not to use the already established VOTable schema? I
> had always assumed that the reason VOTable is included in
> VOResource is so that table metadata could be understood by
> the same software that reads the tables themselves.
>
> Roy
>
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