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:
Mar. 03, 1998
Filed:
Dec. 14, 1994
Applicant:
Inventor:
Fumihiko Kozakura, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395618 ; 395608 ; 395619 ; 395620 ; 39518217 ; 395444 ; 39518204 ;
Abstract
In a data base management system, a checkpoint is recorded at appropriate intervals by recording a checkpoint during the process of a transaction and during the update of a logical page by providing a page table management table for managing a page table by a shadow page method. The page table also manages by the shadow page method a physical page corresponding to each logical page of a data base.