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:
Feb. 16, 1999
Filed:
Apr. 18, 1997
Anurag Kashyap, Fremont, CA (US);
Robert H Gerber, Portland, OR (US);
Diane L Davison, Portland, OR (US);
Sanket Atal, Aloha, OR (US);
Hannes A Spintzik, Portland, OR (US);
Mark T Nelson, Portland, OR (US);
Informix Software, Inc., Menlo Park, CA (US);
Abstract
A computer-based method and system of processing records read respectively from first and second related tables of a database includes determining whether data contained in the records read from the first or second tables is unevenly distributed. Records corresponding to evenly distributed data are searched for matches using a first set of instances of the hash-join operator, and records corresponding to data which is unevenly distributed are searched for matches using a second set of instances of a hash-join operator.