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:
Feb. 25, 2020
Filed:
Apr. 28, 2017
Oracle International Corporation, Redwood Shores, CA (US);
Eugene Inseok Chong, Concord, MA (US);
ORACLE INTERNATIONAL CORPORATION, Redwood Shores, CA (US);
Abstract
Systems for database query processors. In a method embodiment, processing commences upon receiving a first set of a plurality of database language queries that reference a normalized column in an RDF table and that also includes a JOIN clause that references both the normalized column in the RDF table and a corresponding lookup table (e.g., a denormalization dictionary) that contains both normalized RDF data and denormalized RDF data. An in-memory table is allocated and formatted to comprise virtual columns that correspond to denormalized RDF data. Virtual columns of the in-memory table are populated with denormalized RDF data. In case of receipt of a SPARQL query, the incoming query is first translated into non-SPARQL database statements which are in turn recoded into database language statements that use lookup functions to lookup the denormalized RDF data from the virtual columns of the in-memory table rather than by incurring expensive disk I/O operations.
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