Patent · US Active

Consistent execution of partial queries in hybrid DBMS

US10180946B2 · kind B2 · utility

3Cited by

6References

13Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Andreas Brodt · Gerlingen, DE
Daniel Martin · Stuttgart, DE
Jens Mueller · Stuttgart, DE
Oliver Schiller · Seligenstadt, DE
Knut Stolze · Jena, DE

Key dates

Filing date	Nov 9, 2017
Grant date	Jan 15, 2019
Priority date	—
Expiry date	Nov 9, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/2457
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The disclosure relates to a system comprising a first and a second database engine and a replication module. The replication module replicates changes from a first database maintained by the first engine to a second database maintained by the second engine. The system maps state times and sync times. The state times are specified in a first temporal reference system used by the first engine and the sync times are specified in a second temporal reference system used by the second engine. Each mapped state time and sync time pair indicate an identical state of the first and second database or parts thereof. The system executes a query partially by the first and partially by the second engine and uses the mapping to execute the query by the first and/or second engine on data of a single defined state.

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