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Ravi Varma G V
From this page Action Class is specified to be a p,
December 14, 2006 at 5:16 PM

From this page Action Class is specified to be a part of Model, but in real sense the Action Class is a part of Controller because it controls the flow of the action from the controller to the execution of the logic. The connections to the database is done by the business objects class throught a helper class taking care of the DML.
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