Patent · US Active

Processing diff-queries on property graphs

US9405855B2 · kind B2 · utility

3Cited by

7References

20Claims

0Family size

Assignee

SAP AG · DE

Inventors

Elena Vasilyeva · Dresden, DE
Maik Thiele · Dresden, DE
Christof Bornhoevd · Belmont, US
Wolfgang Lehner · Dresden, DE

Key dates

Filing date	Mar 27, 2014
Grant date	Aug 2, 2016
Priority date	—
Expiry date	Sep 25, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/90335
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.