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:
Oct. 26, 2010
Filed:
Aug. 29, 2002
Applicant:
Abdo Esmail Abdo, Rochester, MN (US);
Inventor:
Abdo Esmail Abdo, Rochester, MN (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A join operation is costed by estimating the input/output operations (disk swaps) that will be required for retrieval of tuples from the outer and inner tables. A specific method is presented for estimating the number of input/output operations needed for given inner and outer data tables, which method models the retrieval of randomly arranged data from that table.