Cardinality constraints have been a useful and integral part of conceptual database design since the original entity-relationship (ER) model proposed by Chen. Subsequently many papers discussing classification frameworks for cardinality constraints have been proposed. Completeness of such...

RFID-based technology for identification and tracking has potential to cut costs and provide strategic information for real-time decision support. To be useful, the generated data must be linked and distributed through the enterprise and the supply chain. We cannot achieve this kind of...

As large volumes of medical information are stored in digital format, maintaining data security and privacy becomes increasingly important. Our work considers the mechanism of fine-grained access control (FGAC). Current techniques suffer from the possibility of revealing too much information or...