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. 06, 2010
Filed:
Jul. 02, 2002
Ian R. Finlay, Uxbridge, CA;
Tony Wen Hsun Lai, Toronto, CA;
Daniel C. Zilio, Georgetown, CA;
Calisto Paul Zuzarte, Pickering, CA;
Ian R. Finlay, Uxbridge, CA;
Tony Wen Hsun Lai, Toronto, CA;
Daniel C. Zilio, Georgetown, CA;
Calisto Paul Zuzarte, Pickering, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The retrieval of distinct tuples in a relational database management system. In response to a request from a consumer process for distinct tuples in a relational database table matching a defined criteria, a distinct operator component sequentially requests tuples from a source component. The source component access the database table and returns a tuple in the sequence to the distinct operator component. The distinct operator component passes each tuple in the sequence to an auxiliary logger. The auxiliary component receives a tuples from the distinct component and determines if it is distinct from other previously received tuples in the sequence to verify its uniqueness to the distinct operator. Tuples that are verified as unique by the auxiliary logger are returned to the consumer process by the distinct operator upon verification.