DATABASE SYSTEM AND DATABASE PROCESSING METHOD

摘要

This database system is provided with: a determining unit 13 that determines whether or not information to be registered in a database should be kept secret; a terminal device 1 that, when the determining unit 13 determines that the information should be kept secret, creates N-pieces (N is a predetermined positive integer) of fragmented information by secretly dividing the information and transmits the fragmented information to a system managing device 2; the system managing device 2 that transmits the N-pieces of the fragmented information received from the terminal device 1 to N number of database devices 3, respectively; and N number of database devices 3 that store the N-pieces of the fragmented information received from the system managing device 2, respectively.