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:
Apr. 15, 2008
Filed:
Dec. 22, 2004
Matthew Young-lai, Waterloo, CA;
Anisoara Nica, Waterloo, CA;
Matthew Young-Lai, Waterloo, CA;
Anisoara Nica, Waterloo, CA;
iAnywhere Solutions, Inc., Dublin, CA (US);
Abstract
A database system and methodology for generalized order optimization is described. In one embodiment, for example, in a database system, a method of the present invention is described for optimizing a query requesting data from a database in an ordered form, the method comprises steps of: generating a plurality of partial access plans for obtaining data requested by the query; constructing generalized orders representing requirements of the query for ordering of data, each generalized order representing a set of simple orders; creating generalized orders representing order properties of the partial access plans; intersecting the generalized orders representing requirements of the query for ordering of data with the generalized orders representing order properties of the partial access plans to determine partial access plans having favorable orderings; and building a query execution plan for obtaining and ordering the data requested by the query based, at least in part, on selecting partial access plans having favorable orderings.