use lib '/path/to/safe_dir';
   use MY_DB;
   our $serverName = $MY_DB::serverName;
   our $serverDB   = $MY_DB::serverDB;
   our $db = "DBI:mysql:$serverDB:$serverName";

##</code><code>##

   perldoc perl

##</code><code>##

   perldoc perlmodlib