[DB-SIG] postgres access to db structure

[pierre@saiph.com]

Hello everybody, Im new to this list
My configuration: linux SuSE 7.0, postgres, python 1.5.2, psycopg
I have a little app to develop, but if this works fine, the use of db
might spread in our apps (as an alternative to bsddb and/or
marshalling)
Trying to keep all information in one place, as I have been taught, I
try not to hardcode field names in the python code. One simple
question: how can I query a database, to know which fields it has? the
description attribute of a cursor seems ok to me, but its valid only
when a query has been run, there must be a better way.
I think I remember at least some DB (db2?) have system tables, holding
this kind of information; is this normalized? how-to in postgres?
I didnt find this in postgres doc.
Sorry, its hardly a question for this list, more pure database...

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Pierre Imbaud <pierre@saiph.com>
12 Rue des Bosquets 91480 Quincy Sous S=E9nart France
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