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:
Mar. 11, 2003
Filed:
Dec. 17, 1999
Roberta Jo Cochrane, Los Gatos, CA (US);
James C. Kleewein, San Jose, CA (US);
Ting Yu Leung, San Jose, CA (US);
Mir Hamid Pirahesh, San Jose, CA (US);
Narayana Subramanina, San Jose, CA (US);
Shivkumar Venkataraman, Sunnyvale, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system, method, and article of manufacture for supporting summary tables in a database system that does not otherwise support summary tables is disclosed. The system generally comprises a central program and one or more database systems that may be heterogeneous. At least one of the database systems does not support the generation, maintenance, and/or querying of summary tables. The central program is configured to communicate with the database systems and to identify relations corresponding to summary tables (also referred to as materialized views) within one or more of the database systems. The central program may initiate the generation of summary tables, which may be populated local to the central program or local to one or more of the database systems. The central program may also maintain or coordinate maintenance of the summary tables. In addition, the central program is preferably configured to receive user queries on one or more of the database systems and to generate optimized query plans based upon the user queries, considering in so doing, the contents of the summary tables.