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:
Nov. 19, 2024
Filed:
Feb. 27, 2023
Hitachi, Ltd., Tokyo, JP;
Tsuneyuki Imaki, Tokyo, JP;
Masayuki Sakata, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A database management apparatus receives the specification of an origin column, calculates a confidentiality level of a column in a different database from the database related to the origin column based on a confidentiality level of the origin column and a degree of similarity between contents of data in the origin column and contents of data in the column in the different database. A confidentiality level of the different database is calculated based on the calculated confidentiality level and a value indicating identifiability of the data in the column in the different database, and a confidentiality level of a column selected in the different database is calculated based on the confidentiality level of the different database and a value indicating identifiability of data in the selected column. The selected column is set as the new origin column, and the calculated confidentiality level is set as its confidentiality level.