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Hi, I would go further and say that the derivation of such a conceptual architecture - taking a more top down perspective should be the real work - or at least a very major component of the OGC work, rather than working only bottom up. I think we also need to a position in which we make more use of "registration" to add new features to a specification, rather than by the conventional specification as document process. This was and remains one of the objectives of GML, and to a minor extent this achieved through the deployment of a CRS registry - the content of the registry being (hopefully being blessed by the authority) BEING A standard. I think this approach can be taken in other areas of our work as well. WRT a common information model, I think that is a core issue - but not one easily solved as we have been debating the elements of such a model for a number of years. R
From: Carl Reed OGC Account [mailto:creed@xxxxxxxxxxxxxxxxxx] Sent: May 10, 2007 9:41 AM To: Simon.Cox@xxxxxxxx; p.baumann@xxxxxxxxxxxx; Ron Lake Cc: Ben@xxxxxxxxxxxxxxxx; Roy.Mendelssohn@xxxxxxxx; galeon@xxxxxxxxxxxxxxxx; gpercivall@xxxxxxxxxxxxxxxxxx; Singh, Raj Subject: Re: OGC Ottawa TC meeting highlights Simon - Now you really got me thinking. The core-extension spec pattern dialogue has bothered me in some sense in that there is a more fundamental issue in the standards work of the OGC - there is no foundation model or architecture that describes how the various OGC specs fit together in a consistent and logical manner. This includes not having a consistent information model. I believe that you have put your finger on exactly the same issue except that you have also gone one step farther and provided an initial reference model for discussion. I believe until we can agree on such a model (architecture?), we will continue to be plagued with a variety of semantic issues, inconsistencies in our specs, confusion in the market as to how they all fit together, and so forth. Let's definitely keep this discussion going! Regards Carl
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