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:
Dec. 04, 2007
Filed:
Aug. 22, 2003
Foster D. Hinshaw, Somerville, MA (US);
Craig S. Harris, Acton, MA (US);
Sunil K. Sarin, Newton, MA (US);
Foster D. Hinshaw, Somerville, MA (US);
Craig S. Harris, Acton, MA (US);
Sunil K. Sarin, Newton, MA (US);
Netezza Corporation, Framingham, MA (US);
Abstract
A multi-version database system controls visibility of data during transaction processing. A transaction includes a transaction identifier that identifies the transaction and an invisibility list of transactions whose effects are invisible to the transaction. Changes made by other transactions are visible to the transaction based on the isolation level of the transaction. Records are visible to a transaction based on a creator identifier stored in the record that identifies the transaction that created the record.