How do I use DB instead of file, and is there a stand-alone (no ahdoop) mode?

[Spencer Proffit]

Pig comes very close to meeting my needs, however I need to be able to
load from DB.  I noticed in Jira there was a patch to remove
dependency on file names from the loader.  I'd also like it to scale
down so I can test and dev without hadoop.  Is that possible?  I'm
also thinking about using it with Amazon s3 (disclosure: I work for
Amazon).  If these changes are within the scope of where pig wants to
go (it eats everything, right), I'd be happy to work on the changes
myself.

Spencer