[plt-scheme] Looking for a BerkeleyDB interface

[Jefferson Heard]

I saw some references in 2003 to someone working on this, but it doesn't 
show up in PLaneT.  I was wondering if anyone's done any work on this, 
or if there's some more Schemely alternative to it, such as a native 
Scheme B-Tree database implementation.  Otherwise -- is there a tutorial 
out there on foreign.ss other than the manual?

-- Jeff