Data change message

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In ArcGIS, a message containing any inserts, updates, and deletes applied to a replica. These messages are used to synchronize replicas in a disconnected environment.[1]

For replicas in a disconnected environment, synchronization is achieved through a process of manually exchanging messages between replicas. Two types of messages can be exchanged: data change messages and acknowledgment messages. Data change messages contain data changes, while acknowledgment messages acknowledge the receipt of data change messages. Replicas that are data senders can send data change messages, while replicas that are data receivers can send acknowledgment messages.[2]


  1. Wade, T. and Sommer, S. eds. A to Z GIS: An illustrated dictionary of geographic information systems, ESRI Press, 2006
  2. Synchronizing disconnected replicas, ArcGIS Server 9.3.1 online help, Accessed 31 March 2010

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