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:
Nov. 19, 1996
Filed:
Dec. 07, 1994
Applicant:
Inventors:
Alan J Demers, Boulder Creek, CA (US);
Karin Petersen, Menlo Park, CA (US);
Michael J Spreitzer, Tracy, CA (US);
Douglas B Terry, San Carlos, CA (US);
Marvin M Theimer, Mountain View, CA (US);
Brent B Welch, Mountain View, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395608 ; 39518218 ; 39520003 ; 395670 ; 3642824 ; 3649621 ; 364D / ;
Abstract
A write log that distinguishes between write operations that are known to be in a stable write order ('committed writes') and write operations that still are in a potentially unstable write order ('tentative writes') are maintained for each instance of a weakly consistent replicated database so that the stable and the potentially unstable data in any given instance of such a database can be explicitly identified.