After installing refdb-server you should really pick one of the following driver:
- libdbd-mysql, 
- libdbd-pgsql, 
- libdbd-sqlite3

Then follow manuals instructions from:

http://refdb.sourceforge.net/manual/ch04s08.html#sect2-manual-setup

or:

/usr/share/doc/refdb-0.9.9/refdb-manual/ch04s08.html#sect2-manual-setup

 -- Mathieu Malaterre <malat@debian.org>  Thu, 13 Dec 2012 11:38:41 +0100
