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:
Jan. 22, 2008
Filed:
May. 13, 2004
Gang Luo, Madison, WI (US);
Michael W. Watzke, Madison, WI (US);
Curt J. Ellmann, Madison, WI (US);
Jeffrey F. Naughton, Madison, WI (US);
Gang Luo, Madison, WI (US);
Michael W. Watzke, Madison, WI (US);
Curt J. Ellmann, Madison, WI (US);
Jeffrey F. Naughton, Madison, WI (US);
NCR Corp., Dayton, OH (US);
Abstract
A database system receives a transaction that causes a tuple to be integrated into a join view. In response to receiving the transaction, a predefined first lock is placed on at least a portion of the join view, the predefined first lock conflicting with either a shared lock or an exclusive lock placed on the join view, but not conflicting with another predefined first lock placed on the join view. Also, a latch or semaphore associated with a value of a predetermined attribute of the tuple is obtained before integrating the tuple into the join view.