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:
Sep. 02, 2003
Filed:
Jun. 28, 2002
Hakan Jakobsson, San Francisco, CA (US);
Ari Mozes, San Carlos, CA (US);
Andrew Witkowski, Foster City, CA (US);
Fei Ge, San Jose, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Techniques for processing, in a database management system, a query referencing a plurality of tables of a database include determining whether a join should be performed between a first table and a second table. The determination is based on a particular set of one or more columns of the second table referenced in the query and a join index on the first table for an index key column from the second table. If it is determined that the join should not be performed, the query is processed without performing the join between the first table and the second table. By avoiding one or more joins, substantial savings in the consumption of computational resources are achieved.