[Nitro] how to generate database constraints with og?

[Zachary Zolton]

Being able to do Stored Procs and Functions is a necessity for
developing professional web applications.  Unfortunately, no two
databases do them the same way, so there would have to be a way to
define versions for specific databases.

Still, it'd be nice to be able to call a stored procedure just like a
Ruby method!  What do you guys think?