US Patent 7308465 Playback graph for data synchronization

Embodiments of the present invention pertain to a data structure designed to manage object relationships to actual transactions. The data structure is at least an efficient substitute for a simple ordered transaction log. The data structure allows for pre-playback graph pruning that reduces the overall time required to complete a playback operation. It also allows for more robust error handling when a given transaction fails for non-transport related errors (i.e., the business rules or security rights have changed) by keeping the graph updated on a per-object basis.