说明：  现在的公司人员数量及职位种类较多，各样的人事管理活动也比较频繁，因此需要设计一个公司人员信息管理系统来对公司员工信息进行管理。
(There are many kinds of personnel and positions in the company, and various personnel management activities are frequent. Therefore, it is necessary to design a company personnel information management system to manage the staff information.)