Editing Dataset Manipulation, Triggers and Events (section)

=Adding To Datasets=

This is done with a config file under cfg/cfg.d/ which we can call package_name.pl for example. 

The following shows an example of adding the file_cmd_mime to the file dataset.

  $c->add_dataset_field( "file", {
        name => "file_cmd_mime",
        type => "text",
  }, reuse => 1 );

Note that we can specify the reuse flag to say if we can reuse this field if it already exists. If this is set to 0 (or not defined) and the field already exists the package install will fail. 

Note also that if none of the config files define the field, then it is assumed it no longer required and it is removed (data included). Some investigation is need to see if upgrades work... (:S)