Updating first data value before second data value

Details Updating first data value before second data value Updating first data value before second data value

2011-03-08

2011-03-08

Truong, Cam Y (Department: 2169)

Data processing: database and file management or data structures

Database and file access

C707S781000, C707S785000

Reexamination Certificate

active

07904438

ABSTRACT:
A flag and a wait period are used to guarantee that readers of two data values see the updated first value before they see the updated second value, where the second value has to be updated after the first value is updated and thus is dependent on the first value. The first value is updated, and a flag associated with the first data value is set. The flag effectively prevents further updating of the first data value until it has been cleared. A length of time is waited for, such that any reading of the first data value and the second data value is guaranteed to not see the second data value as updated unless the first data value is also seen as updated. The flag is then cleared, such that further updating of the first data value can again occur. The second data value is finally updated.

REFERENCES:
patent: 5027316 (1991-06-01), Frantz et al.
patent: 5226143 (1993-07-01), Baird et al.
patent: 5283830 (1994-02-01), Hinsley et al.
patent: 5452460 (1995-09-01), Distelberg et al.
patent: 6341340 (2002-01-01), Tsukerman et al.
patent: 6625603 (2003-09-01), Garg et al.
patent: 6662184 (2003-12-01), Friedberg
patent: 2004/0015642 (2004-01-01), Moir et al.

Affiliated with

Also associated with

Rating

Updating first data value before second data value does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Updating first data value before second data value, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Updating first data value before second data value will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2758830