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:
Sep. 23, 2025
Filed:
Mar. 31, 2022
Unisys Corporation, Blue Bell, PA (US);
Kelsey L Bruso, Minneapolis, MN (US);
James M Plasek, Eagan, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A processor-based method of updating a secondary index for a B-tree in a database in a DBMS to include subsequent changes that occurred during creation of the secondary index includes opening an audit trail and moving back in the audit trail to a captured system time; making the secondary index visible to the DBMS for INSERT, UPDATE and DELETE processing; reading a next committed set of database updates from the audit trail; creating a secondary index modification for each row on each audit trail update and applying it to the secondary index; clearing the captured system time from control information for the B-tree to indicate completion; and making the secondary index visible to the DBMS for all processing.