CREATE TABLE `vn`.`device` (
  `id` INT NOT NULL,
  `sn` VARCHAR(50) NULL,
  `model` VARCHAR(50) NULL,
  `userFk` INT(10) UNSIGNED NOT NULL,
  PRIMARY KEY (`id`),
  INDEX `device_fk1_idx` (`userFk` ASC),
  CONSTRAINT `device_fk1`
    FOREIGN KEY (`userFk`)
    REFERENCES `account`.`user` (`id`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION);

ALTER TABLE `vn`.`device` 
CHANGE COLUMN `id` `id` INT(11) NOT NULL AUTO_INCREMENT ;