Method of designated time interval reservation access process of online updating and backing up of large database versions without reserving exclusive control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 23, 1997
Grant Date -
N/A
app pub date -
Sep 7, 1995
filing date -
Sep 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An online database system executes an update or reference process for a plurality of records without stopping the online system by registering the update or reference process for reservation. By registering an update or reference process for a plurality of records for reservation beforehand, the reserved access process is executed at the designated reservation access time. The reservation update process is executed by a preliminary process for registering the process for reservation and a reservation update posterior process which is executed at the time of first access to the record after the reservation update time and the reservation reference process is executed by a preliminary process for registering the process for reservation, a posterior process which is executed after the reservation reference time, and a reservation reference backup process which is executed when an update process for said record which is generated after the reservation reference time and before the posterior process is executed.
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