The invention enables multiple users to simultaneously access and change the contents of a database in a flexible manner. Each user interacts with a working copy of a master copy of the database. The contents of each of the working copies of the database can be accessed and manipulated so that the...http://www.google.ca/patents/US5751958?utm_source=gb-gplus-sharePatent US5751958 - Allowing inconsistency in a distributed client-server application
