$ pmvers DBI DBD::SQLite DB_File BerkeleyDB
DBI: 1.616
DBD::SQLite: 1.33
DB_File: 1.824
BerkeleyDB: 0.49

$ perl -MBerkeleyDB -le " print $BerkeleyDB::db_version
5.1

$ perl -MDB_File -le " print $DB_File::db_version "
5.1