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. 03, 2004
Filed:
Apr. 04, 2001
Applicant:
Inventor:
Rolf Günter Erich Stegelmann, Valencia, CA (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/730 ;
U.S. Cl.
CPC ...
G06F 1/730 ;
Abstract
A database system includes a storage module containing a table having plural portions (e.g., rows). A lock manager places a table-level lock on the table for a first transaction, the first transaction updating a first row of the table. The lock manager converts the table-level lock to a lower level lock to lock the first table portion if a second transaction requests an access of the first portion of the table.