Patent ID: 7287249
Filing Date: 2007-10-23
Classification: G06F,Y10S

Abstract:
1. A method comprising: receiving, from a publishing system comprising a first database with a first schema associated therewith, a list of one or more object instances to be sent to a recipient system comprising a second database with a second schema associated therewith, wherein said first schema is different from said second schema; for each object instance in the list, determining whether the object instance has changed since the object instance was previously sent to the recipient system, wherein the first schema is used to determine whether the object instance has changed, if at all; for each object instance that has changed since previously sent to the recipient system, generating a delta snapshot comprising data indicative of changes between a current version and the version of the object instance previously sent to the recipient system, wherein the delta snapshot is generated using the first and second schemas; and sending to the recipient system at least one delta snapshot for at least one changed object instance.