Industry vendors hesitate to disseminate proprietary applications to academia and third party vendors. By consequence, the benchmarking process is typically driven by standardized...
Full disjunctions are an associative extension of the outerjoin operator to an arbitrary number of relations. Their main advantage is the ability to maximally combine data from di...
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
Abstract—With rising concerns on user privacy over the Internet, anonymous communication systems that hide the identity of a participant from its partner or third parties are hig...
—Database security has become a vital issue in modern Web applications. Critical business data in databases is an evident target for attack. Therefore, ensuring the confidentiali...
Hasan Kadhem, Toshiyuki Amagasa, Hiroyuki Kitagawa