public function relations()
{
return array('attribute' => array(self::BELONGS_TO, 'OEModule\\OphCiExamination\\models\\OphCiExamination_Attribute', 'attribute_id'), 'element_type' => array(self::BELONGS_TO, 'ElementType', 'element_type_id'), 'options' => array(self::HAS_MANY, 'OEModule\\OphCiExamination\\models\\OphCiExamination_AttributeOption', 'attribute_element_id'));
}