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:
Jul. 17, 2007
Filed:
Dec. 19, 2002
Materialized view signature and efficient identification of materialized view candidates for queries
Guogen Zhang, San Jose, CA (US);
Irene Ching-hua Liu, San Jose, CA (US);
Ding-wei Chieh, Cupertino, CA (US);
Lee-chin Hsu Liu, San Jose, CA (US);
Yao-ching Stephen Chen, Saratoga, CA (US);
Hsuiying Yen Cheng, Fremont, CA (US);
Brian Thinh-vinh Tran, San Jose, CA (US);
Yun Wang, Saratoga, CA (US);
Ruiping LI, San Jose, CA (US);
Guogen Zhang, San Jose, CA (US);
Irene Ching-Hua Liu, San Jose, CA (US);
Ding-Wei Chieh, Cupertino, CA (US);
Lee-Chin Hsu Liu, San Jose, CA (US);
Yao-Ching Stephen Chen, Saratoga, CA (US);
Hsuiying Yen Cheng, Fremont, CA (US);
Brian Thinh-Vinh Tran, San Jose, CA (US);
Yun Wang, Saratoga, CA (US);
Ruiping Li, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for efficiently identifying materialized view candidates for queries filters materialized views using certain criteria, using the materialized view signatures. This filtering rejects some of the unqualified materialized views prior to the performance of the query rewrite matching algorithm, resulting in a group of materialized view candidates. The query rewrite matching algorithm is then performed on the materialized view candidates. By first filtering the materialized views based on their signatures, the number of materialized views on which the query rewrite matching algorithm is performed is significantly reduced, improving performance.