tripal/tripal_feature/tripal_feature.api.inc

<?php
 
/**
 * Implements hook_chado_feature_schema()
 * Purpose: To add descriptions and foreign keys to default table description
 * Note: This array will be merged with the array from all other implementations
 *
 * @return
 *    Array describing the feature table
 *
 * @ingroup tripal_feature
 */
function tripal_stock_chado_feature_schema() {
  $description = array();

  $description['foreign keys']['organism'] = array(
        'table' => 'organism',
        'columns' => array(
          'organism_id' => 'organism_id',
        ),
  );
  
  $description['foreign keys']['dbxref'] = array(
        'table' => 'dbxref',
        'columns' => array(
          'dbxref_id' => 'dbxref_id',
        ),
  );
  
  $description['foreign keys']['cvterm'] = array(
        'table' => 'cvterm',
        'columns' => array(
          'type_id' => 'cvterm_id',
        ),
  );

  return $description;
}