Abstract By breaking sensitive associations between attributes, database fragmentation can protect the privacy of outsourced data storage. Database algorithms need prior knowledge in tackled and set it as optimization objective. Thus, effectiveness these is limited by knowledge. Inspired anonymity degree measurement techniques such k -anonymity, an anonymity-driven problem defined this paper. F...

This paper presents an idea of designing the L3OP system using distributed database. Existing centralized database Learning Objects based system can not well-organized the large volume of Learning Objects especially when time goes and data volume increasing continuously. It influences the data processing performance which may not run efficiently when the system with extremely large amount of da...

Distributed database systems can yield significant cost and performance advantages over centralized systems for geographically distributed organizations. The efficiency of a distributed database depends primarily on the data allocation (data replication and placzment) and the operating strategies (where and how retrieval and update query processing operations are performed). We develop a distri...

MDBAS is a prototype of a multidatabase management system based on mobile agents. The system integrates a set of autonomous databases distributed over a network, enables users to create a global database scheme, and manages transparent distributed execution of user requests and procedures including distributed transactions. This paper highlights the issues related to mobile database procedures,...