The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2014
Filed:
Aug. 17, 2009
Masashi Iwaki, Tokyo, JP;
Takeshi Anzai, Yokohama, JP;
Yuki Sugimoto, Sagamihara, JP;
Katsushi Yako, Yokohama, JP;
Shinichi Kawamoto, Tokyo, JP;
Natsuko Sugaya, Inagi, JP;
Masashi Iwaki, Tokyo, JP;
Takeshi Anzai, Yokohama, JP;
Yuki Sugimoto, Sagamihara, JP;
Katsushi Yako, Yokohama, JP;
Shinichi Kawamoto, Tokyo, JP;
Natsuko Sugaya, Inagi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An information processing system, a data update method and a data update program are disclosed. In a data base system of master-slave configuration, the update result can be accessed also on slave side with the access request immediately after the particular update. The data base system DBS includes a master DB computer and at least a slave DB computer. The slave DB computer judges from the count on an update counter table whether the update log received from the master DB computer is to be reflected in a duplicate data base or not. Thus, the lost update problem is solved while at the same time realizing a high-speed process.