US Patent Issued to HITACHI, THE UNIVERSITY OF TOKYO on Sept. 30 for "Database management apparatus and method" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,430,334, issued on Sept. 30, was assigned to HITACHI LTD. (Tokyo) and THE UNIVERSITY OF TOKYO (Tokyo).

"Database management apparatus and method" was invented by Norifumi Nishikawa (Tokyo), Shinji Fujiwara (Tokyo), Mayuko Ozawa (Tokyo), Kazuhiko Mogi (Tokyo), Kazuo Goda (Tokyo) and Yuto Hayamizu (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The scanning range of an inner table can be limited in the join processing irrespective of the existence of search conditions or a partition key, and the performance of the join processing can be improved. There is a column range index representing a range of values stored in a table. When a join result of a...