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:
May. 22, 2012
Filed:
Dec. 02, 2008
Srinivas S. Vemuri, Santa Clara, CA (US);
Atrayee Mullick, Santa Clara, CA (US);
Bipul Sinha, Foster City, CA (US);
Amit Ganesh, San Jose, CA (US);
Dieter Gawlick, Palo Alto, CA (US);
Srinivas S. Vemuri, Santa Clara, CA (US);
Atrayee Mullick, Santa Clara, CA (US);
Bipul Sinha, Foster City, CA (US);
Amit Ganesh, San Jose, CA (US);
Dieter Gawlick, Palo Alto, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Techniques are disclosed for creating and using a filter index in order to identify registered queries whose result sets are likely to have been changed by changes made to tables. The filter index entries are based on filter conditions. The filter conditions are created based on predicates contained in the registered queries. The filter conditions may include exclusive predicates and join predicates. Join predicates that join a table Twith a table Tmay be instantiated by replacing references to table Twith values extracted from table T. Various techniques are described for recognizing situations in which a query can be included in, or excluded from, the set of likely-changed queries, without fully evaluating the filter conditions that correspond to the queries.