公开(公告)号：US11636107B2

公开(公告)日：2023-04-25

申请号：US16531256

申请日：2019-08-05

申请人： HITACHI, LTD. ,  The University of Tokyo

发明人： Akira Shimizu ,  Seisuke Tokuda ,  Michiko Yoshida ,  Kazuhiko Mogi ,  Shinji Fujiwara ,  Nobuo Kawamura ,  Masaru Kitsuregawa ,  Kazuo Goda

IPC分类号： G06F16/2453 ,  G06F16/2455 ,  G06F9/48

摘要： A database management system (DBMS) generates a query execution plan including information representing one or more database (DB) operations necessary for executing a query and executes the query based on the query execution plan. In the execution of the query, the DBMS dynamically generates a task for executing a DB operation and executes the dynamically generated task. The DBMS executes a task in a plurality of threads executed by a processor core.