公开(公告)号：US20180357444A1

公开(公告)日：2018-12-13

申请号：US16105757

申请日：2018-08-20

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： V Vimal Das Kammath ,  Tijo Thomas ,  Vinod Krishnankutty Chandrika

IPC: G06F21/62 ,  G06F17/30

CPC classification number: G06F21/6227 ,  G06F17/30 ,  G06F17/30507 ,  G06F17/30566

Abstract: The present invention discloses a system, method, and device for unified access control on federated database. In one implementation, a federated system to provide a unified access control for the data stored in federated databases is disclosed. The federated system comprise at least one central access controller configured to receive at least a query plan generated; verify the query plan generated against at least a user rights pre-stored in at least one central authorization metadata table, a table and an associated column name from the query plan is verified; update, if the user rights pre-stored allow access to the query plan verified, the query plan generated; convert the query plan updated to at least a physical query for execution by at least one database; and execute the physical query to return at least a result for the federated query received.