PROCESSING LOAD DISTRIBUTION SYSTEM AND METHOD, AND DATABASE DEVICE AND PROCESSING LOAD DISTRIBUTION PROGRAM

PROBLEM TO BE SOLVED: To shorten time required for creating a correspondence relation table describing a correspondence relation between input retrieval processing and N distribution destination databases.SOLUTION: In database devices 10to 10, access location information in relation to M pieces of processing requested from a processing load distribution device 100 is obtained by estimating the processing and data access location information to be retrieved using data access routing information (L pieces in total) stored in an access location information storage means 13, and is returned to the processing load distribution device the correspondence relation table is generated on the basis of the data access location information in the processing load distribution device, and the processing is distributed to the database devices on the basis of the correspondence relation table. Each of the database devices executes the distributed processing, stores the data access routing information in relation to the processing in the access location information storage means, and synchronizes the data contents thereof with other database devices.