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:
May. 29, 2018
Filed:
Dec. 02, 2014
International Business Machines Corporation, Armonk, NY (US);
Haruki Imai, Kanagawa, JP;
Hideaki Komatsu, Kanagawa, JP;
Akira Koseki, Kanagawa, JP;
Toshiro Takase, Chiba, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An extraction device for extracting a sub query to be converted to a program for processing stream data continuously inputted to a database, from a query including instructions, as sub queries, to be issued to a database management system. The extraction device includes: an input unit; an operation unit for calculating the memory increase amount in a case of processing the stream data and the processing time to be reduced for each sub query, and calculating the efficiency by using them; and an extraction unit for selecting at least one sub query whose efficiency is equal to or higher than the lower limit value, integrating the memory increase amount calculated for the selected sub query, and on condition that the integrated memory increase amount is equal to or smaller than the maximum memory increase amount, extracting the selected sub query as a conversion object.