We only consider the operation system , the applied software on client machine , net and other hardware etc . , when tuning the database performance with traditional way . if we only tune the database ' s round environment , it just respited the situation , and could not resolve the problem at all 传统的数据库性能优化主要从操作系统、客户端应用软件程序设计、网络及其它硬件设备等方面来考虑，这种方法只是调整数据库的周边环境，只能暂时缓解问题，而不能从根本上解决问题。
Conclusion the performance of this database has been updated by several measures . through its internet interface user can get graph and letter data of death cause review investigated in the 70 ' s and the 90 ' s of thee whole nation now besides the disease distribution thematic maps and do some statistic work . the url of internet interface of this database is cancernet . cicams . ac . cn : 7777 结论：通过几种措施，该数据库性能和并发访问量得到大幅提升，目前已整理发布我国70年代与90年代死亡回顾调查数据，向用户提供文字界面和图型界面查结果，同时提供辅助统计功能，网址为cancernet . cicams . ac . cn : 7777 。
