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:
Mar. 28, 2023
Filed:
Jul. 26, 2019
Oracle International Corporation, Redwood Shores, CA (US);
Rafi Ahmed, Fremont, CA (US);
Randall Bello, Hampton, NH (US);
Andrew Witkowski, Foster City, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Definitions of material views are automatically generated. In general, Automated MV generation identifies a set of candidates MVs by examining a working set of query blocks. Once the candidates are formed, the candidate MVs are further evaluated to calculate a benefit to the candidate MVs. An improved approach for generating a candidate set of MVs is described herein. The improved approach is referred to as the extended covering subexpression technique (ECSE). Under ECSE, various relationships between join sets other than strict equivalence are used to generate new resultant join sets. Such relationships include subset, intersection, superset, and union, which shall be described in further detail below. In some cases, relationships among resultant join sets and initial join sets are considered to generate new resultant join sets. The final resultant join sets are then used to form a candidate set of MVs.