[R] R ORM?

[Faheem Mitha]

Hi,

Does anyone know of an R ORM (Object Relational Mapper)? I'm thinking of 
something similar to sqlalchemy (http://www.sqlalchemy.org/). 
Alternatively or additionally, can people offer suggestions about managing 
relational databases from R. I'm currently using postgresql, but would 
like a flexible solution that works across different databases, hence the 
enquiry about ORMs.

Please CC me on any reply.
                                                           Thanks, Faheem.