I am using Perl's tie function to tie the DB_File to a hash. The DB_File
I don't know the answer to your question. But since you cc'd the dbi-users list, I thought I'd let you know that, as of the most recent release of DBI (1.42), the DBI distribution now comes with DBD::DBM, a Perl/DBI/SQL interface to any DBM files including Berkeley DB - it sits on top of the *DBM perl modules (with or without MLDBM) or DB_File.pm or BerkeleyDB.pm, using them for database creation/access/modification and using the same SQL engine as DBD::CSV to provide the SQL front end.
See http://search.cpan.org/~timb/DBI-1.42/lib/DBD/DBM.pm for details.
-- Jeff
