Patent
1989-05-02
1992-03-31
Fleming, Michael R.
G06F 1214
Patent
active
051014882
ABSTRACT:
In a real-time data base system, data is updated by reading the data and checking an exception flag associated with a locked status. If the exception flag is not set, the data is locked and read in an updatable fashion. If the data is locked, the data may still be read if a peek-mode access is requested.
REFERENCES:
patent: 4399504 (1983-08-01), Obermarck et al.
patent: 4476528 (1984-10-01), Matsumoto et al.
patent: 4480304 (1984-10-01), Carr et al.
patent: 4635189 (1987-01-01), Kendall
patent: 4698752 (1987-10-01), Goldstein et al.
patent: 4791554 (1988-12-01), Hirota et al.
patent: 4821175 (1989-04-01), Hikita et al.
patent: 4961139 (1990-10-01), Hong et al.
patent: 4965719 (1990-10-01), Shoens et al.
IBM Technical Disclosure Bulletin, vol. 29, No. 3, Aug. 1986, pp. 1193-1195 "Locking Mechanism for Controlling Access to Data Base Resources".
IBM Technical Disclosure Bulletin, vol. 21, No. 4, Sep. 1978, pp. 1723-1728, "Multilevel Locking with Deadlock Avoidance", D. B. Lomet.
Lehman, Philip L. and Yao, S. Bing, "Efficient Locking for Concurrent Operations on B-Trees", ACM Transactions on Data base Systems, vol. 6, No. 4, Dec 1981, pp. 650-670.
Oprescu Valentin
Rosenthal Robert S.
Auve Glenn A.
Fleming Michael R.
Motorola Inc.
Nielsen Walter W.
Wille Paul F.
LandOfFree
Method for retrieving and updating data in a real-time data base does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for retrieving and updating data in a real-time data base, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for retrieving and updating data in a real-time data base will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2265815