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:
Apr. 27, 2010
Filed:
May. 31, 2005
Kelsey L. Bruso, Minneapolis, MN (US);
James M. Plasek, Shoreview, MN (US);
William J. Reichow, White Bear Lake, MN (US);
Kelsey L. Bruso, Minneapolis, MN (US);
James M. Plasek, Shoreview, MN (US);
William J. Reichow, White Bear Lake, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A system and method for managing a database is provided. The system and method includes logic that supports an atomic synchronization operation initiated by execution of a single synchronization statement. This operation utilizes a single call to a database management system to transform a database table from a first unknown state to a known state that contains a specified target record containing one or more specified data values. The first unknown state may be a state that already contains the target record, or may instead be a state that does not contain the record. In the former instance, a record containing one or more of the data values is created, and in the latter instance, the existing record is updated. A one-step locking mechanism is performed in conjunction with the operation to prevent the occurrence of deadlock and to minimize the number of required lock requests.