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:
Aug. 02, 2016
Filed:
Mar. 27, 2014
Elena Vasilyeva, Dresden, DE;
Maik Thiele, Dresden, DE;
Christof Bornhoevd, Palo Alto, CA (US);
Wolfgang Lehner, Dresden, DE;
Elena Vasilyeva, Dresden, DE;
Maik Thiele, Dresden, DE;
Christof Bornhoevd, Palo Alto, CA (US);
Wolfgang Lehner, Dresden, DE;
SAP AG, Walldorf, DE;
Abstract
A system, computer-implemented method, and a computer-readable medium for determining why a query returns a null set in a database management system. When the database management system receives a query graph, database management system compares the query graph to the data graph. Based on the comparison, database management system identifies a discovered component of the query graph and a missing component of the query graph, wherein the missing query component indicates a reason for the null set.