A security strategy of data exchanging in client/server system

Data sharing in client/server database structure brings about many complex problems which DBMS must face to. Among them the data integrity control problem arisen form simultaneous database accesses by several clients has been paid much attention to. However, people often ignore the other situation in which data inconsistency will occur, that is, in the application system where exists close data dependency between client and server, needing real time data exchanging between client and server, when abnormality happens in network link; the data exchanging can not be processed temporarily. The data inconsistency will occur and system error will be made. The data exchanging security problem brought by abnormal network link-between client and server has been discussed based on the C/S database model. The strategies that should be adopted for different cases have been put forth. And the concrete solutions have been given by exemplifying.