<?php
/**
* Implementation of hook_install().
*/
function book_install() {
  // Create tables.
  drupal_install_schema('book');
}
?>
 
<?php
/**
* Implementation of hook_schema().
*/
function book_schema() {
  $schema['book'] = array(
    'fields' => array(
      'vid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'nid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'parent' => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
      'weight' => array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'size' => 'tiny')
    ),
    'indexes' => array(
      'nid'    => array('nid'),
      'parent' => array('parent')
    ),
    'primary key' => array('vid'),
  );
  return $schema;
}
?>