Ok thanks for the 1st guy I found the code.
Machine.Migrations: I mean, the data schema/data migration framework.
I mean, the one mentioned here: http://blog.eleutian.com/2008/04/25/AFirstLookAtMachineMigrations.aspx
Ok so somebody had used it? I think I would like to have such framework in my project (I have been using rails, such framework helps a lot on making migration more systematic)