Integrating Security Policies in Federated Database Systems

This paper describes a multilevel security policies integration methodology to endow tightly coupled federated database systems with a multilevel security system. The proposal is based on a schema integration process. It obtains, in a semi-automatic form, the ordered set of classification levels for the multilevel security system of the federation, and the translation functions between each ordered set belonging to each component database and the federated ordered set as well. The proposed methodology also includes a way to solve the problem of classification of the components of the Federated Schema generated during the integration process.