The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2020
Filed:
Mar. 07, 2016
Hitachi, Ltd., Tokyo, JP;
Satoru Watanabe, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a system in which a database process among processes of a computer is offloaded to one or more hardware circuits each having a memory, the computer divides a column store database made up of a plurality of records and a plurality of columns into a plurality of data segments. One or more columns among the plurality of columns are each one or more compression target columns. Each of the plurality of data segments includes: a column store database portion made up of one or more records among the plurality of records; and a compression dictionary which is a dictionary for decompressing one or more compression target column portions within the column store database portion. The size of the compression dictionary in each of the plurality of data segments is equal to or smaller than the size of the memory.