tripal/tripal_entities/tripal_entities.install

<?php
/**
 * Implementation of hook_schema().
 *
 */
function tripal_entities_schema() {
  $schema['tripal_entity'] = array(
    'description' => 'The base table for Tripal Vocabulary-based entities.',
    'fields' => array(
      'entity_id' => array(
        'description' => 'The primary identifier for a vocabulary entity.',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'cvterm_id' => array(
        'description' => 'The type of entity. This cvterm_id should match a record in the Chado cvterm table.',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'default' => '',
      ),
      'tablename' => array(
        'description' => 'The Chado table that contains the record that this entity is associated with.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => ''
      ),
      'record_id' => array(
        'description' => 'The unique numerical identifier for the record that this entity is associated with (e.g. feature_id, stock_id, library_id, etc.).',
        'type' => 'int',
        'not null' => TRUE,
      ),
      'title' => array(
        'description' => 'The title of this node, always treated as non-markup plain text.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'uid' => array(
        'description' => 'The {users}.uid that owns this node; initially, this is the user that created it.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'status' => array(
        'description' => 'Boolean indicating whether the node is published (visible to non-administrators).',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 1,
      ),
      'created' => array(
        'description' => 'The Unix timestamp when the node was created.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the node was most recently saved.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'indexes' => array(
      'entity_changed' => array('changed'),
      'entity_created' => array('created'),
      'tablename' => array('tablename'),
      'record_id' => array('record_id'),
      'chado_record' => array('tablename', 'record_id'),
      'cvterm_id' => array('cvterm_id'),
      'uid' => array('uid'),
    ),
    'unique keys' => array(
      'record' => array('tablename', 'record_id'),
    ),
    'primary key' => array('entity_id'),
  );
  return $schema;
}