METHOD AND DEVICE FOR MANAGING HIERARCHICAL DATABASE AND RECORDING MEDIUM WITH HIERARCHICAL DATABASE MANAGEMENT PROGRAM RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To fast retrieve a database. SOLUTION: A hierarchically managing part 6 hierarchically manages the real data of a storage device 4 and moves/duplicates the real data of a designated hierarchy meeting a prescribed reference with which the significance of data is decided to another designated hierarchy. It is also possible to retrieve not all real data managed by a DBMS but only data having high significance stored in the designated hierarchy by applying a prescribed operation to the real data of the designated hierarchy.