分析了分布式數據庫系統的結構及其面臨的安全問題，提出了一種基于容侵技術的分
布式數據庫體系結構。從事務處理的角度出發，結合入侵檢測和容侵技術，對被攻擊的部分進行定位和修復，為合法用戶提供不間斷的服務。采用門限秘密共享技術，實現關鍵數據的機密性。
關鍵詞：分布式數據庫；入侵容忍；入侵檢測
Abstract: This paper analyses the structure of distributed database system and its security issue, then proposes an architecture for distributed database system security based on intrusion tolerance. With intrusion detection and intrusion tolerance technology, based on transactions, this architecture can detect intrusions, locate and repair the damage caused by the intrusions , thus, the system can provide uninterrupted services to legitimate users. Threshold secret share schemes are presented to protect confidential data.
Key words: distributed database; intrusion tolerance; intrusion detection