A Multilevel Secure Database Model

• Main Authors: Hung-Ju Lu, 呂泓儒
• Other Authors: Tzong-An Su
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/54670994110154825091

碩士 === 逢甲大學 === 資訊工程所 === 97 === Multilevel secure (MLS) database model provides a data protection mechanism different from traditional data access control. The MLS database has been used in various application domains including government, hospital, military, etc. The MLS database model protects data by grouping them into different classification and creates different views to the users of different clearance levels. Previous models have focused on data level classification like tuples and elements. In this study, we introduce a schema level classification mechanism, i.e. attribute and relation classification. Adding this new classification scheme to those existing model like MLR, will make a complete secure database model in terms of data classification scheme. In this model, we fist formally define the basic model, then we give definitions of integration properties and operations of database. The proof shows that this model is a sound, complete, and secure database model.