公开(公告)号：US12130818B2

公开(公告)日：2024-10-29

申请号：US18216709

申请日：2023-06-30

Applicant: Hitachi, Ltd.

Inventor： Tianben Ding ,  Mika Takata ,  Toshihiko Kashiyama ,  Hiroaki Masuda

IPC: G06F16/24 ,  G06F16/242 ,  G06F16/2455

CPC classification number: G06F16/24564 ,  G06F16/2425

Abstract: Provided are a data management apparatus, a data management system, and a data management method capable of creating an alternative for a useful query when a query for operating a database violates a data handling regulation of the database. When data scheduled to be generated based on the database by the query violates a rule that is the data handling regulation of the database, a data processing server generates an alternative query candidate to replace the query. The data processing server determines whether the alternative query candidate violates the rule by determining whether data scheduled to be generated based on the database by the alternative query candidate complies with the rule. When the alternative query candidate does not violate the rule, the data processing server proposes the alternative query candidate as an alternative query.

公开(公告)号：US12299157B2

公开(公告)日：2025-05-13

申请号：US17945958

申请日：2022-09-15

Applicant: Hitachi, Ltd.

Inventor： Tsunehiko Baba ,  Jumpei Okoshi ,  Hiroaki Masuda

IPC: G06F21/00 ,  G06F21/62

Abstract: A policy can be easily and appropriately set. A policy setting control device 100 that controls setting of a policy for controlling access to a resource includes a processor. The policy includes a resource to be accessed, a subject who accesses the resource, and an access operation. The processor receives an input policy 11 which is a candidate to be newly set, acquires an attribute value corresponding to values of a subject and a resource included in the input policy 11, generates one or more post-conversion policies 103 by changing the values of the subject and the resource included in the input policy 11 to the acquired attribute value, and sets the input policy as a new policy when all the generated post-conversion policies 103 are consistent with an existing policy.