Data Security Strategy Research Based On Distributed Database Environment

Along with the database technology developing and widely using in business field, the quest for data share to users is stronger and stronger, it is a very important to make sure of these data being used safely . On the one hand, it requires DBMS provide a security strategy to make sure of data to be used safely; on the other hand, because of client/server technology developing and consummating, DBMS often runs on background server, which security is provided by itself. But client application runs on client, its security can but is designed by application programmer, which is used to prevent users which have no access from executing program model. Therefore, how to compose efficiently the security strategy of background DBMS with the one of foreground application into a entire security system, and boost up the security of application system, come into being a very important question for database application system designing.This paper emphasize on the research of security strategy of large RDB based on B/S three-tier system structure, and discuss of the data security management strategy from every side of account management, authority management, view management, rule management, audit monitor, data dictionary track. This paper, which use orient-object model designing idea, design and realize a common data security control of application system.