Re: [egov] Tactics on data alignment / standardization

["Carl Reed" <creed@opengis.org>]

Farrukh -

Yes, there has been considerable discussion of schema registries by OGC
members and staff. Let me explore this issue a bit more and provide some
more information.

Kind regards

Carl

----- Original Message -----
From: Farrukh Najmi <farrukh.najmi@sun.com>
To: Eliot Christian <echristi@usgs.gov>
Cc: Thomas Lee <ytlee@cecid.hku.hk>; <egov@lists.oasis-open.org>; Carl Reed
<creed@opengis.org>; Joe Chiusano <chiusano_joseph@bah.com>
Sent: Thursday, July 24, 2003 5:43 AM
Subject: Re: [egov] Tactics on data alignment / standardization


> Eliot Christian wrote:
>
> > At 09:46 PM 7/23/2003 -0400, David RR Webber wrote:
> >
> >> Carl,
> >>
> >> On quick inspection you deserve an award for the most complex
> >> XML application I have seen, and also for using the most
> >> complex parts of the W3C specifications.
> >
> >
> > To me, it seems the GML approach is to use XML Schema as a tool for
> > representing semantic relationships as well as data type syntax. So,
> > a "polygon" is not merely defined in terms of its syntax as a set of
> > coordinate pairs, but it is derived from a chain of abstract types
> > that mark higher levels of geometric abstraction. That's not wrong
> > in itself, expect that it makes the whole structure fiendishly
> > difficult to handle and very obtuse to understand. IMHO, GML
> > could employ a simple XML Schema type system supplemented by
> > an ISO 11179 semantic register.
>
> The idea of leveraging a registry (I assume you meant "semantic
> registry" in above statement) to handle some of the complexity makes
> good sense. ebXML Registry standard is based upon ISO 11179 specification.
>
> What may be a similar example is that the OpenGIS consortium
<http://www.opengis.org> has been using the ebXML Registry Information Model
specification for more than a year now to implement catalogue services for
the geospatial domain
>
> Could Eliot or Carl look into the state of that work and determine
> whether a similar approach could be employed for managing GML data. You
> may contact Richard Martell mailto:rmartell@galdosinc.com for more
> information.
>
> --
> Farrukh
>
>