CREATE TABLE `company_services`(  
  `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `id_company` INT(10) UNSIGNED NOT NULL,
  `service` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`id`),
  FOREIGN KEY (`id_company`) REFERENCES `companies`(`id`) ON UPDATE CASCADE ON DELETE CASCADE
) ENGINE=INNODB CHARSET=utf8;