Patent ID: 6393419
Filing Date: 2002-05-21
Classification: G06F,G06Q,Y10S

Abstract:
A multi-client database synchronization method for avoiding data corruption, the method comprising the steps of:contacting a database manager by a first client seeking to access a database record; allowing the first client access to the database record by the database manager; storing a change counter value by the database manager upon the first client accessing the database record, the change counter value being a first value which corresponds to the state of the database when the first client accessed the database record; saving a modified version of the database record having modifications made by a second client after the first client accessed the database record; incrementing the change counter value to a value of other than the first value in response to the second client saving the modified version of the database record; seeking to save the database record by the first client; and denying the first client from saving the database record by the database manager upon determining the change counter value has been incremented from the first value.