您尝试插入Nominees中不存在的Address Nominees_NomineeId。然后，被提名者填充值并创建Address，然后填充值最后创建AccountHolder实例。然后保存

You try to insert Address Nominees_NomineeId that is not exists in Nominee.You should First instance of Nominee then fill value and create Address and fill value last create instance of AccountHolder.and then save