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From Yann Puech <ch...@yahoo.com>
Subject Re : best practice for handling database schema changes
Date Wed, 06 Dec 2006 15:29:59 GMT
I don't want to receive this email anymore !!!
 
Thanks !


----- Message d'origine ----
De : Tobias SCHOESSLER <Tobias.Schoessler@unvienna.org>
À : cayenne-user@incubator.apache.org
Envoyé le : Jeudi, 30 Novembre 2006, 15h59mn 50s
Objet : best practice for handling database schema changes


hi, 
What is the best practice for handling changes to the database schema once a cayenne mapping
was created? 
We use the 'reverse engineer from database' feature to create an initial mapping. But then
we usually have to do manual changes like map some pks, add flattened relationships, etc.

If then the database schema needs to be changed we usually have a problem as 'reverse engineer
from database' overwrites everything. There seems to be the possibility to replace only selected
tables but if you do this the relationships are messed up. Is there a way to  merge the changes
with the current model/mapping? 

thanks 

Tobias


	

	
		
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