Welcome to the jdbm project!
I started this project around Xmas 1999 in order to help the Exolab guys (http://www.exolab.org) to a simple persistence mechanism. As it stands, it has already proven useful for a number of their projects. The original page for this software is at http://www.cdegroot.com/software/db.
The idea of this project is to enhance the package to something more akin to the dbm/ndbm/gdbm libraries under Unix. Specifically, this would mean addition of hashing and indexing schemes, and a very preliminary step towards extendible hashing (the first scheme to be implemented) has already been taken.