公开(公告)号：US20250110958A1

公开(公告)日：2025-04-03

申请号：US18903945

申请日：2024-10-01

Applicant: Hitachi, Ltd.

Inventor： Divya SINGH ,  Toshihiko KASHIYAMA ,  Tianben DING

IPC: G06F16/2453

Abstract: A query processing device that reduces the calculation cost for checking whether a query complies with restrictions. A query dividing section generates subqueries by dividing an input query for each of a plurality of organizations. A score computing section computes an organization score by evaluating an organization-specific risk that is the risk of determination that the subquery does not comply with organization rules of the organization corresponding to the subquery, on the basis of history information relating to a determination track record resulting from determining, regarding each organization, whether or not the input query complies with the organization rules of each organization. A subquery control section sequentially transmits the subqueries to rule check devices in transmission order according to the organization score, and response information is received regarding the subquery from the rule check devices. Whether the input query complies with restrictions is determined by using the response information.

公开(公告)号：US20240012818A1

公开(公告)日：2024-01-11

申请号：US18216709

申请日：2023-06-30

Applicant: Hitachi, Ltd.

Inventor： Tianben DING ,  Mika TAKATA ,  Toshihiko KASHIYAMA ,  Hiroaki MASUDA

IPC: G06F16/2455 ,  G06F16/242

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.