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:
Nov. 25, 2014
Filed:
Jan. 29, 2009
Awny K. Al-omari, Cedar Park, TX (US);
Hansjorg Zeller, Los Altos, CA (US);
Tom C. Reyes, Austin, TX (US);
Awny K. Al-Omari, Cedar Park, TX (US);
Hansjorg Zeller, Los Altos, CA (US);
Tom C. Reyes, Austin, TX (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Embodiments of the present invention are directed to query-optimization methods and systems that employ risk premiums assigned to database operations in order to increase the robustness and reliability of the evaluation and selection of query-execution plans for executing high-level database queries. Using risk-premium estimates, selection of query-execution plans that include potentially inefficient database operations and inefficient database-operation-execution sequences, often selected by currently available query-optimization methods and systems, are avoided.