Patent ID: 6405220
Filing Date: 2002-06-11
Classification: G06F,Y10S

Abstract:
A method of communicating data in a multi-tier database management system having a master database server, an application server, at least one workgroup server, and a plurality of workgroup user clients, said application server and said workgroup server interposed between said master database server and said workgroup user clients, said method comprising:examining transactions in a master database transaction log of the master database server, and replicating to the workgroup server those transactions intended for a user on the workgroup server or for any workgroup clients attached to the workgroup server; and examining transactions in a workgroup database transaction log of the workgroup server, skipping those transactions originating at the master database server, and copying data files corresponding to transactions originating at the workgroup server or at a workgroup user client of the workgroup server to an inbox of the master database server.