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:
Feb. 14, 2012
Filed:
Oct. 06, 2004
James C. Kleewein, San Jose, CA (US);
Edison Lao Ting, San Jose, CA (US);
James C. Kleewein, San Jose, CA (US);
Edison Lao Ting, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method (and an article of manufacture having computer readable program code to implement the method) is disclosed to version a node range and locate a versioned node range in a storage architecture, wherein the method comprises: maintaining a set of node ranges, with each node range being formed from a range of node ID values assigned to each node among a plurality of nodes, receiving a node modification request for a node range from a database system, versioning the node range by copying (to a storage) a node range to which the node modification request is to be made, labeling the copied node range with a timestamp, locating the labeled node range via the timestamp and a hash on the node range, and outputting the located labeled node range. Optionally, versioning is done by shadowing nodes in the range to a version hash table based on a range identifier.