A Security Model for Object-Oriented Databases

The Integration of object-oriented programming concepts with databases IS one of the most significant advances In the evolutlon of database systems and several recent pro}ects are developing object-oriented databases Among the many Issues brought along by this combination, one that IS becoming important ISthe protection of information We develop here an authorization model for objectorlented databases. This model consists of a set of pohcies, a structure for authorization rules, and an algorithm to evaluate access requests against the authorization rules For concreteness we use a speclflc database system to illustrate our model, but Its concepts are applicable to a range of ob)ect-ortented databases