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. 14, 2017
Filed:
Nov. 07, 2011
Applicant:
Shigero Sasaki, Tokyo, JP;
Inventor:
Shigero Sasaki, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30327 (2013.01);
Abstract
A database management device includes plural index blocks having a tree structure and each having an access counter and at least one index entry for identifying one piece of row data constituting a table data or another index block, and an access management device that updates the access counter of each of the plural index blocks accessed along the tree structure, the access being made in a manner such that the index entry is referred to in response to data manipulation to the table data.