Effective Corrupted Data Isolation in Database Systems
Hong Ping Zhu · Jisuanji kexue yu tansuo · 2010
The survivability requires the database system to have an ability to isolate corrupted data after an intrusion activity is detected,so as to avoid damage spreading due to share of corrupted data.This paper defines and implements an isolation policy language inside DBMS(data base management system) and proposes an innovative data isolation algorithm.This algorithm guarantees users data integrity by means of substituting table with dynamic view during the phase of isolation.By substitution of all tables with dynamic views in sub-queries,the algorithm achieves a highly effectiveness.Experiments based on TPC-W benchmark show that the data isolation algorithm has a low running performance overhead.