DROP TABLE IF EXISTS child;
CREATE TABLE `child` (
  `id_child` bigint(20) unsigned NOT NULL auto_increment,
  `birthday` date NOT NULL,
  `name` char(128) NOT NULL,

  `id_family` bigint(20) unsigned NOT NULL,
  KEY `child_family` (`id_family`),
  CONSTRAINT `child_family` FOREIGN KEY (`id_family`) REFERENCES `family` (`id_family`),

  PRIMARY KEY  (`id_child`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;