Duplicating database contents

Abstract

The invention provides data processing, data control and information methods and systems for efficiently duplicating contents of a database in the data control system. An example of a data processing system includes: a cache unit acquiring, from a data control system which categorizes a plurality of data elements into a plurality of clusters and stores the plurality of clusters; a group-of-clusters update information acquisition unit for acquiring from the data control system group-of-clusters update information with respect to a group of clusters consisting of two or more clusters; a group-of-clusters update information computation unit for computing group-of-clusters update information with respect to the group of clusters based on two or more pieces of cluster update information; and an update judging unit for judging that a cached data element belonging to the group of clusters is the most updated one.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a data processing system, a data control system, a data processing method, a data control method, a data processing program, a data control program, and an information system. More particularly, the present invention relates to a data processing system, a data control system, a data processing method, a data control method, a data processing program, a data control program, and an information system, where the data processing system efficiently duplicates contents of a database in the data control system. BACKGROUND OF THE INVENTION [0002] In an information system for performing a data processing by using data stored on a database, speeding up of the processing is realized through a parallel processing by a plurality of data processing systems. Each data processing system in this manner duplicates data on the database. Therefore, data can be accessed at a high speed, and concentration of accesses to the database can be a...

AI Technical Summary

Benefits of technology

The present invention provides an information system with a data control system and a data processing system. The data control system categorizes data elements into clusters and stores them, while the data processing system acquires data from the data control system and performs data processing on it. The invention also provides methods, programs, and systems for data control and processing. The technical effects of the invention include improved data management and processing efficiency, better data utilization, and improved data processing performance.

Problems solved by technology

128, 2002., have a problem that a large amount of data needs to be sent in order and to transmit an update operation or an update result.

Consequently, they also have a problem that an amount of communications between a database and a data processing system to check the update becomes large.

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