The Implementation of Recovery System in DBASE Ⅲ by TSR Technique

Recovery system is an important part of DBMS for solving the problem of databasesecurity.It recovers the database to a correct state after some failure occurs in a database.The purpo-se of this paper is to design a recovery system for DBASE Ⅲ in order to improve its security andreliability This recovery system is implemented by TSR (Terminate and Stay-Resident) technique