Model type for DB stored procedures back end?

I have to use a database via stored procedures (#>100) as a back end system in a web dynpro application.

And I wonder which type of model is the most appropriate for that usage szenario.

Of course, I have to create some kind of DAO to access the db and expose the stored procedures as methods of the DAO. But how to get the DAO functionality into the WD model?

Do I have to go via web services, even if the DAO and the WD application run on the same instance? I think it is some kind of oversized. Would'nt the JavaBean model fit better? But how to get the DAO functionality into the JavaBean model?

Thank you, best regards

Christian Luehe