drupal/modules/user/user.install

<?php
// $Id$

/**
 * Implementation of hook_schema().
 */
function user_schema() {
  $schema['access'] = array(
    'description' => t('Stores site access rules.'),
    'fields' => array(
      'aid' => array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => t('Primary Key: Unique access ID.'),
      ),
      'mask' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => t('Text mask used for filtering access.'),
      ),
      'type' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => t('Type of access rule: name, mail or host.'),
      ),
      'status' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => t('Whether rule is to allow(1) or deny(0) access.'),
      ),
    ),
    'primary key' => array('aid'),
  );

  $schema['authmap'] = array(
    'description' => t('Stores distributed authentication mapping.'),
    'fields' => array(
      'aid' => array(
        'description' => t('Primary Key: Unique authmap ID.'),
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'uid' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t("User's {user}.uid."),
      ),
      'authname' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => t('Unique authentication name.'),
      ),
      'module' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
        'description' => t('Module which is controlling the authentication.'),
      ),
    ),
    'unique keys' => array('authname' => array('authname')),
    'primary key' => array('aid'),
  );

  $schema['permission'] = array(
    'description' => t('Stores permissions for users.'),
    'fields' => array(
      'pid' => array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => t('Primary Key: Unique permission ID.'),
      ),
      'rid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The {role}.rid to which the permissions are assigned.'),
      ),
      'perm' => array(
        'type' => 'text',
        'not null' => FALSE,
        'size' => 'big',
        'description' => t('List of permissions being assigned.'),
      ),
      'tid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('Originally intended for taxonomy-based permissions, but never used.'),
      ),
    ),
    'primary key' => array('pid'),
    'indexes' => array('rid' => array('rid')),
  );

  $schema['role'] = array(
    'description' => t('Stores user roles.'),
    'fields' => array(
      'rid' => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => t('Primary Key: Unique role id.'),
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE,
        'default' => '',
        'description' => t('Unique role name.'),
      ),
    ),
    'unique keys' => array('name' => array('name')),
    'primary key' => array('rid'),
  );

  $schema['users'] = array(
    'description' => t('Stores user data.'),
    'fields' => array(
      'uid' => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => t('Primary Key: Unique user ID.'),
      ),
      'name' => array(
        'type' => 'varchar',
        'length' => 60,
        'not null' => TRUE,
        'default' => '',
        'description' => t('Unique user name.'),
      ),
      'pass' => array(
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'default' => '',
        'description' => t("User's password (md5 hash)."),
      ),
      'mail' => array(
        'type' => 'varchar',
        'length' => 64,
        'not null' => FALSE,
        'default' => '',
        'description' => t("User's email address."),
      ),
      'mode' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => t('Per-user comment display mode (threaded vs. flat), used by the {comment} module.'),
      ),
      'sort' => array(
        'type' => 'int',
        'not null' => FALSE,
        'default' => 0,
        'size' => 'tiny',
        'description' => t('Per-user comment sort order (newest vs. oldest first), used by the {comment} module.'),
      ),
      'threshold' => array(
        'type' => 'int',
        'not null' => FALSE,
        'default' => 0,
        'size' => 'tiny',
        'description' => t('Previously used by the {comment} module for per-user preferences; no longer used.'),
      ),
      'theme' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => t("User's default theme."),
      ),
      'signature' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => t("User's signature."),
      ),
      'created' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('Timestamp for when user was created.'),
      ),
      'access' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('Timestamp for previous time user accessed the site.'),
      ),
      'login' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t("Timestamp for user's last login."),
      ),
      'status' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => t('Whether the user is active(1) or blocked(0).'),
      ),
      'timezone' => array(
        'type' => 'varchar',
        'length' => 8,
        'not null' => FALSE,
        'description' => t("User's timezone."),
      ),
      'language' => array(
        'type' => 'varchar',
        'length' => 12,
        'not null' => TRUE,
        'default' => '',
        'description' => t("User's default language."),
      ),
      'picture' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => t("Path to the user's uploaded picture."),
      ),
      'init' => array(
        'type' => 'varchar',
        'length' => 64,
        'not null' => FALSE,
        'default' => '',
        'description' => t('Email address used for initial account creation.'),
      ),
      'data' => array(
        'type' => 'text',
        'not null' => FALSE,
        'size' => 'big',
        'description' => t('A serialized array of name value pairs that are related to the user. Any form values posted during user edit are stored and are loaded into the $user object during user_load(). Use of this field is discouraged and it will likely disappear in a future version of Drupal.'),
      ),
    ),
    'indexes' => array(
      'access' => array('access'),
      'created' => array('created')
    ),
    'unique keys' => array('name' => array('name')),
    'primary key' => array('uid'),
  );

  $schema['users_roles'] = array(
    'description' => t('Maps users to roles.'),
    'fields' => array(
      'uid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('Primary Key: {user}.uid for user.'),
      ),
      'rid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => t('Primary Key: {role}.rid for role.'),
      ),
    ),
    'primary key' => array('uid', 'rid'),
  );

  return $schema;
}