Is there a tool that would let me upgrade a database with a new
schema (without loosing data)?

I have a database, x weeks later there is a new schema.. I want the
possibility to skip that upgrade (if I don't need the added features,
I don't want to upgrade)... When I decide I want to upgrade (I need
the added features or whatever) I should be able to do so without
loosing data...

The schema is 'complete' in each upgrade...


Do I make any sense?

-- 
 Turbo     __ _     Debian GNU     Unix _IS_ user friendly - it's just 
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  _ /// / /__| | | | | |_| |>  <  Turbo Fredriksson   turbo@bayour.com
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13 Dec 2001 14:47:59 +0100
Turbo Fredriksson <turbo@bayour.com>
Database upgrades