Structured name-spaces in secure databases

Abstract

The satisfaction of confidentiality demands is secure logic-based databases requires a distortion of the database’s intended model. This work focuses on distortions incurred by changes in a database’s name-space, i.e., its signature, which are useful for achieving a high degree of confidentiality. Extensions to an open database’s universal name-space which preserve its static and dynamic semantics are the key element. The resulting structured name-spaces can be used to reflect both the sharing of protection units between groups of users and the demands to keep them confidential. With respect to multi-level databases, these extensions can be embedded in the partial order of the security levels, which yields a set of hierarchical name-spaces.