Patent · US Active

Supporting cursor snapshot semantics

US9792318B2 · kind B2 · utility

20Cited by

24References

18Claims

0Family size

Assignee

SAP SE · DE

Inventors

Ivan Schreter · Malsch, DE
Juchang Lee · Seoul, KR
Changgyoo Park · Seoul, KR
Michael Muehle · Walldorf, DE

Key dates

Filing date	Nov 25, 2014
Grant date	Oct 17, 2017
Priority date	—
Expiry date	May 27, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/2365
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A database upon opening each of at least one cursor for a transaction, assigns each statement forming part of a transaction a statement sequence number (SSN) involving at least one row of the database. Thereafter, temporary timestamps are assigned to the at least one row using a transaction identifier and the corresponding SSN. Further, active cursors are monitored such that a final timestamp is prevented from being associated with each row until it has no remaining cursors. Related apparatus, systems, techniques and articles are also described.

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