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:
May. 29, 2001
Filed:
Jun. 29, 1998
Timothy R. Learmont, Palo Alto, CA (US);
Other;
Abstract
A method and system for database concurrency control is provided that allows lock groups to contain columns of different tables and allows an individual column of a table to be in more than one lock group. While using optimistic concurrency control for monitoring multiple transactions modifying the same database, it allows the concurrent access of a single table when the individual columns of the table are accessed by separate users or applications. This, in turn, reduces the delay of waiting for a table to be free for access and decreases the delay of rolling back transactions that are concurrently accessing a table. The reduction of these delays increases the overall data processing efficiency for the system.