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. 10, 2016
Filed:
Apr. 10, 2012
Shigero Sasaki, Tokyo, JP;
Yoshihiro Hattori, Tokyo, JP;
Shigero Sasaki, Tokyo, JP;
Yoshihiro Hattori, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A database performance estimation device includes: a unit that switches at least two types of calculation methods according to configuration mode data and performs the switched calculation method to acquire a child block searching time (d) and a leaf block scanning time (s); a unit that switches at least two types of calculation methods according to the configuration mode data and performs the switched calculation method to acquire an entry inserting time (i); and a unit that calculates an average time required for identifying a target leaf block per one manipulation performed to the index block, an average time required for searching for a target entry in the identified leaf block, and an average time required for inserting a target entry in the identified leaf block, and estimates the total of the average times calculated above as an average processing time per one manipulation performed to the index block.