METHOD AND SYSTEM FOR SHARING DATABASE

PROBLEM TO BE SOLVED: To provide a database sharing method and a sharing system capable of performing stable operation without generating the competition of data accesses and the delay of response time even in the case of simultaneously performing processing by a plurality of users. SOLUTION: When a master DB is referred to by specifying a working range (S1, S2), the use of the working range by another user is displayed (S4) if the working range is in reservation, the working range is reserved in a reservation table when the working range is not reserved yet (S5), and the specified range is copied in the working DB (S6). After the working (S7), the reservation table in the master DB is referred to (S8), and when the corresponding range does not exists in the master DB, working data are copied in the master DB (S13) and the reservation of the reservation table is released (S14). COPYRIGHT: (C)2006,JPO&NCIPI