Suppose the Florida State tries to find a cost-effective way to design a centralized secure information system to store all students records in the state. It must be very easy for a system administrator to retrieve/revise/restore a students record as well as search for a students record. The system must be secure against some intruders that can physically steal the disk storage and attempt to recover the student information as much as possible from the storage. Reason your design to balance the cost and security (in terms of confidentiality or/and integrity)