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:
Jun. 21, 2011
Filed:
Aug. 14, 2008
Jinmei Shen, Rochester, MN (US);
Hao Wang, Rochester, MN (US);
Jinmei Shen, Rochester, MN (US);
Hao Wang, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In an embodiment, data is partitioned into partitions, which are divided into levels. The levels are ordered by creation times of the levels. A request is received at a current partition, which includes a key that identifies a field in a record and a value for the key. A determination is made whether the value exists in the field in the current partition. If the determination is false, a message is sent from the current partition to a next-older partition, and the message instructs the next-older partition to move the record with the value from the next-older partition to the current partition. If the determination is true, the record with the value in the field is moved from the current partition to a next-newer partition if the next-newer partition sent the request, and the record is deleted from the current partition.