Database Update

Hans Novak <[email protected]> Wed, 30 Apr 2008 14:16:59 +0200
Newsgroups gmane.comp.jakarta.ojb.user
Message-ID <[email protected]>
Hi,

how can i update the Database, if i change my Java-sourcecode and with 
that the database structure, without loosing any data.
Until now i use the mysql command to import the SQL-Ascii File, created 
from OJB with ant.
But this deletes first all tables.

Hans