Patent ID: 6490597
Filing Date: 2002-12-03
Classification: G06F,Y10S

Abstract:
A method of managing a database of data objects stored in a memory of a computer, the method comprising:storing a reference date and a first retention time in association with each data object in the database, wherein the first retention time represents an estimated interval over which the data object should be retained in the database; updating the reference date of each data object responsive to accessing the data object such that the reference date comprises a last access date for the data object; adjusting the first retention time of each data object responsive to accessing the data object based on whether the data object being accessed is current or requires updating; identifying outdated objects in the database by periodically comparing the first retention time for each data object in the database to an elapsed time from the last access date of the data object and a current date of the computer system; and removing outdated data objects from active use to conserve the memory of the computer.