We can't program out human stupidity :)
If users choose to query on UCDs (which they have asked for) then they have to be allowed to do so.
Cheers,
Tony.
> -----Original Message-----
> From: owner-voql-at-eso.org [mailto:owner-voql-at-eso.org] On
> Behalf Of Martin Hill
> Sent: 07 October 2003 18:51
> To: 'voql'
> Subject: Re: A Working document has been submitted
>
>
> Then there's a danger that users get back incorrect results without
> knowing it, which (I gather) is worse than the query failing.
>
> Tony Linde wrote:
>
> > No, if the user chooses to use UCDs then they take the risk
> that they
> > mean different things in different tables being targetted. So UCDs
> > must be included.
> >
> > Cheers,
> > Tony.
> >
> >
> >>-----Original Message-----
> >>From: owner-voql-at-eso.org [mailto:owner-voql-at-eso.org] On
> >>Behalf Of Martin Hill
> >>Sent: 07 October 2003 18:41
> >>To: 'voql'
> >>Subject: Re: A Working document has been submitted
> >>
> >>
> >>Errrm - as I understand it, UCDs are *never* uniquely
> >>resolvable. ie,
> >>even if there is a unique UCD in one table, it doesn't
> >>necessarily mean
> >>it has the same meaning as a column with the same UCD in
> >>another table.
> >>
> >>That means we need to get user confirmation at every stage
> >>where we map
> >>between UCDs and table columns at the moment, and wherever we
> >>specify an
> >>actual applied query, it needs to be resolved to actual
> table column
> >>names.
> >>
> >>Tony Linde wrote:
> >>
> >>
> >>>I think it is essential that ADQL support the use of *both*
> >>
> >>UCDs and
> >>
> >>>column names. It'll be up to the query interface to
> >>
> >>substitute column
> >>
> >>>names (by asking the user probably) where UCDs are not uniquely
> >>>resolvable.
> >>>
> >>>Cheers,
> >>>Tony.
> >>>
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: owner-voql-at-eso.org [mailto:owner-voql-at-eso.org] On Behalf Of
> >>>>Roy Williams
> >>>>Sent: 07 October 2003 15:50
> >>>>To: Clive Page; voql
> >>>>Subject: Re: A Working document has been submitted
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>> Region ('CIRCLE J2000 19.5 -36.7 0.02')
> >>>>
> >>>>I have a question in the same style. I would like to
> start using the
> >>>>UCD ontology within VOQL. I am imagining metadata queries like
> >>>>
> >>>>select table where UCDMatch(table, "phys.velocity,
> >>
> >>src.galaxy") > 0.8
> >>
> >>>>in order to find tables that have galactic velocities.
> Can VOQL be
> >>>>extended in this way?
> >>>>
> >>>>Roy
> >>>>
> >>>
> >>>
> >>
> >
>
>
Received on 2003-10-07Z20:00:12