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List:       mifos-developer
Subject:    [Mifos-developer] database downgrades
From:       "Jim Kingdon" <jkingdon () grameenfoundation ! org>
Date:       2006-12-18 22:28:20
Message-ID: 9DD845C1ED0D5D40B4B56DF5A4B1EB0E011DE0C9 () gfmail ! gfusa ! org
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In addition to the database upgrade script work I checked in
last week, I've now checked in an addition for
downgrade scripts.  So in addition to

upgrade_to_101.sql
upgrade_to_102.sql
...

there are

downgrade_from_102.sql
downgrade_from_101.sql
...

This is to handle the situation where a site upgrades,
puts in new data, and then discovers a big problem with
the new application and wants to go back to the old one.

The biggest downside is that any time a developer changes
the database schema or master data, then need to write
not only an upgrade script but a downgrade script as well.

Is this too much work for developers?  Is this feature
valuable?


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