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. 12, 2006
Filed:
Apr. 04, 2002
Applicants:
Gang Luo, Madison, WI (US);
Michael W. Watzke, Madison, WI (US);
Curt J. Ellmann, Madison, WI (US);
Jeffrey F. Naughton, Madison, WI (US);
Inventors:
Gang Luo, Madison, WI (US);
Michael W. Watzke, Madison, WI (US);
Curt J. Ellmann, Madison, WI (US);
Jeffrey F. Naughton, Madison, WI (US);
Assignee:
NCR Corp., Dayton, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01); G06F 7/00 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A database system includes a locking mechanism for a materialized view defined on base relations. In response to updates of a base relation, a predefined lock (e.g., Y lock or IY lock) is placed on the materialized view. With the locking mechanism, transaction concurrency is enhanced by enabling concurrent updates of a materialized view by plural transactions in certain cases.