ALTER TABLE `vn2008`.`Tickets` 
ADD COLUMN `zoneFk` INT(11) NULL DEFAULT NULL AFTER `isDeleted`,
ADD INDEX `Tickets_zoneFk_fk_idx` (`zoneFk` ASC);

ALTER TABLE `vn2008`.`Tickets` 
ADD CONSTRAINT `Tickets_zoneFk_fk`
  FOREIGN KEY (`zoneFk`)
  REFERENCES `vn`.`zone` (`id`)
  ON DELETE RESTRICT
  ON UPDATE CASCADE;