public function __unset($name)
{
$this->_load();
if (isset($this->__inforecord_array[$name])) {
DB::delete($this->_table_name, array($this->_key_name => $this->_key_value, "name" => $name));
unset($this->__inforecord_array[$name]);
return true;
}
return false;
}