Please list I already did in another comment but I'll repeat: django south, hibernate schemaupgrade, datamapper automigrate, postfacto (standalone python/postg

Please list I already did in another comment but I'll repeat: django south, hibernate schemaupgrade, datamapper automigrate, postfacto (standalone python/postgres), sqlalchemy-migrate e.g. "I want to add this column to this table." The difference is that in Rails the user has to update the model and create a matching migration. In most other frameworks the second part is strictly optional and by default implicit. Woe be unto the developer whose deployment process only works 90% of the time. That's not what happens. In practice there's always a review step. However, I've already been accused of strawmanning, so rather than taking this further offtopic let me just point you to http://south.aeracode.org/docs/tutorial/part1.html http://south.aeracode.org/docs/tutorial/part1.html