文档介绍：Several Problems in Database Design of CIMS
Yang GAO, Yiming CHEN, Wenxin ZHAO, Lan TIAN
College of Business and Management , Central South University of Technology, ,China,410083
E-mail: x-******@csut.
Abstract: Basing on abundant experience of Improvement of data localization.
developing application project of CIMS, the article The data and the applications which use the data
proposes the principles of database design of CIMS , should be stored as closely as possible . This may
and analyzes and discusses several concrete design reduce greatly the remote interactive access times,
questions of CIMS such as data and may decrease the flow amount work data ,
distribution ,mechanism and implementation of data and may cut time spent on data transmission , and
security ,data share etc. may make control over running applications more
keywords:CIMS, dtabase design ,data security simple . Thus the running efficiency of the whole
system is improved .
Security control of diverse grades
This mean that users are divided into DBA grade
1. Introduction ones, resource grade users
Because of wide scope of data distribution, and connect grade users. Together with views in
high refreshing speed, huge access capacity and database ,volume passwords are set up to check
strict requirement for share and security, CIMS safety. The users of different grades do there own
need