Core vs Extensions in data services

[Pedro Osuna]

Dear Benjamin,

you are right in that I should have probably phrased the sentence
better....

The intention of the agenda point is not to firm up what it says there,
but to [...]"agree on decisions "[...].

What I mean with that is that I expect a decision (one way or another)
to be taken on those three points at this meeting. Which option has
still to be discussed, but in order to stop an infinite process, I want
a decision as outcome of the meeting.

Hope this clarifies the issue.

Cheers,
P.



On Tue, 2006-11-14 at 09:55 +0100, Benjamin Gufler wrote:
> Dear all,
> 
> seeing "single language, single bnf" as a decision point on the agenda
> for thursdays telecon shows me I've probably misinterpreted the core vs.
> extensions discussion (or I'm misinterpreting the point on the agenda).
> 
> On 2006-11-02 05:59, Doug Tody wrote:
> > Hence, in defining
> > ADQL we should probably not try to prejudge usage, and should rather
> > merely define the language, leaving issues of capabilities to be defined
> > when ADQL is used in some more specific context.
> 
> I agree on that defining what's core and what are extensions in the
> language could probably be a disadvantage for certain services having
> needs we didn't (or even couldn't) think of now.
> However, imo defining the language as one big monolithic block is not
> the best approach to solve this problem. By defining ADQL in a very
> modular way, each service definition could then pick some of these
> modules and define them as "required" for the service, leaving the
> remaining modules "optional" or "extension".
> 
> Benjamin
-- 
Pedro Osuna Alcalaya

European Space Agency (ESA)
European Space Astronomy Centre (ESAC)
Research and Scientific Support Department (RSSD)
Astronomy Science Operations Division (SCI-SD)
e-mail: Pedro.Osuna at esa.int
Tel + 34 91 813 13 14    Fax: +34 91 813 11 72
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