Yii Database Relation | Basic

public function relations() { // NOTE: you may need to adjust the relation name and the related // class name for the relations automatically generated below. return array( 'TProdtype' => array(self::BELONGS_TO, 'Producttypes', array('ID' => 'PRODTYPE_ID')), 'TPrice' => array(self::BELONGS_TO, 'ProductBranch', array('ID' => 'PROD_ID')), 'TBrand' => array(self::BELONGS_TO, 'Brands', array('BRAND_ID' => 'ID')), 'TUnit' => array(self::BELONGS_TO, 'Units', array('UNIT_ID' => 'ID')), ); }