DATABASE MANAGEMENT APPARATUS AND DATABASE MANAGEMENT METHOD

DATABASE MANAGEMENT APPARATUS AND DATABASE MANAGEMENT METHOD

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 d...

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Hauptverfasser: SAKATA, Masayuki, IMAKI, Tsuneyuki
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator SAKATA, Masayuki
IMAKI, Tsuneyuki
description 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.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title DATABASE MANAGEMENT APPARATUS AND DATABASE MANAGEMENT METHOD
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