lapadula 中文意思是什麼

At present, there is still a great deal of problem in the application of the secure model of the distributed database. under common circumstance, the secure usually is self - contradict with vivid in the database, while customer wanting to get stronger and vivid capability, needing the sacrifice to the database secure in some extent, vice versa. based on distributed database system and secure characteristic, this text analyzed its database safe strategy and related secure model, the system appearance and operate rule, the system appearance and operate rule, studied the customer role management, safe strategy and the role authorition problem, specially emphatically studied the bell. lapadula model. ( including its basic concept, system appearance, related operation and the secure rule gather ). according to the actual application environment, this text carried bell. lapadula model to entity to turn, through a research discover that model adoption compulsory secure strategy, attain a vivid secure control not easily, so increase the secure strategy of the independent access control mechanism to carry on " flabby " to the original model, and relatedly increased rule, put forward a new kind of secure mechanism - ddm ( the distributed database discretionary mandatory ). turn the rule principle according to the ddm secure mechanism and entity, designed a secure controller of database - dds ( the distributed database secure distribute ) controller adopted ddm secure mechanism, and established the secure control mechanism of the dds secure controller

拉帕丟拉模型進行實體化，通過研究發現該模型採用強制性安全策略，不易做到靈活的安全控制，因此添加自主存取控制機制的安全策略對原模型進行「鬆弛」 ，並相應的增加了規則，提出一種新的安全機制? ? ddm （ distributeddatabasediscretionaryandmandatory ，分散式數據庫自主與強制性）安全機制。基於實體化規則原理，設計了一個採用ddm安全機制的數據庫控制器? ? dds （ distributeddatabasesecure ，分散式數據庫安全）控制器，並設置了dds安全控制器的安全控制機制。通過dds安全控制器在實踐中的應用，本文分析了dds安全控制器的各項功能和安全特點，設計了實際應用中dds控制器的管理方案，實現了分散式數據庫安全控制。