my $virtual1 = {
              'user' => {
                          'driver' => 'mysql',
                          'username' => 'username',
                          'attributes' => {
                                            'extra_attrib' => 'attrib_value'
                                          },
                          'port' => 'port',
                          'database' => 'databasename',
                          'password' => 'password',
                          'host' => 'machine_name',
                          'connect' => 'DBI:mysql:database=databasename;host=machine_name;port=port'
                        }
            };