/**
  * Check if a field exists
  *
  * This will refer to the {@link Table} object for this class to see
  * if a field with that name exists in the corresponding table in the
  * database.
  * @param name     - the name of the field to check for
  * @return boolean - true if a field with that name exists
  * @access public
  * @see Table
  */
 public function exists($name)
 {
     return $this->table->fieldExists($name);
 }