batch_callback.install

<?php

/**
 * Implememts hook_install()
 */
function batch_callback_install() {
  db_update('system')
    ->fields(array('weight' => 100))
    ->condition('type', 'module')
    ->condition('name', 'batch_callback')
    ->execute();


}

/**
 * Implements hook_uninstall().
 */
function batch_callback_uninstall() {
  
}

/**
 * Implements hook_enable()
 */
function batch_callback_enable() {
    db_update('system')
    ->fields(array('weight' => 100))
    ->condition('type', 'module')
    ->condition('name', 'batch_callback')
    ->execute();
}

/**
 * Implements hook_schema().
 */
function batch_callback_schema() {
  $schema['batch_callback_log'] = array(
    'description' => t('Batch Callback Log'),
    'fields' => array(
      'id' => array(
        'description' => 'Primary identifier',
        'type' => 'serial',   //type = 'serial' 1st time
        'unsigned' => TRUE,
        'not null' => TRUE,
        ),
      'timestamp' => array(
        'description' => 'Unix timestamp for when the log entry was created.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        ),
      'uid' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The {user}.uid of the user which was updated.'),
      ),
      'pid' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The profile id of the user which was updated.'),
      ),
      'contact_id' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The contact id of the user which was updated.'),
      ),
      'contact_updated' => array(
        'description' => 'Contact updated flag',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        ),
      'first_name' => array(
        'description' => 'First name parsed from real name field.',
        'type' => 'varchar',
        'length' => 255,
        'default' => '',
      ),
      'last_name' => array(
        'description' => 'Last name parsed from real name field.',
        'type' => 'varchar',
        'length' => 255,
        'default' => '',
      ),
    ),
    'primary key' => array('id'), //this is last element of array
  );
  return $schema;
}