drupal/modules/trigger/trigger.install

<?php
// $Id$

/**
 * Implementation of hook_install().
 */
function trigger_install() {
  // Create tables.
  drupal_install_schema('trigger');

  // Do initial synchronization of actions in code and the database.
  actions_synchronize(actions_list());
}

/**
 * Implementation of hook_uninstall().
 */
function trigger_uninstall() {
  // Remove tables.
  drupal_uninstall_schema('trigger');
}