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:
Sep. 18, 2018
Filed:
Jan. 10, 2014
Hitachi, Ltd., Tokyo, JP;
Noriko Nagae, Tokyo, JP;
Norihiro Hara, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
This database system includes a first site that provides a database and a second site that stores a copy of said database. A first computer for the first site performs database processing and updates the data in the database. A first original storage for the first site transmits data to a second original storage for the second site asynchronously with respect to a database management unit, and a first duplicate storage for the first site transmits data to a second duplicate storage for the second site asynchronously with respect to the database management unit. A second computer for the second site compares the data in the second original storage with the data in the second duplicate with prescribed timing and restores the database if the data in the second original storage and the data in the second duplicate storage do not match.