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Advanced Topics with ArcGIS Server - IGIC

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Synchronization occurs via messaging<br />

• Replica pairs synchronize through messages<br />

– Data change message—includes data changes<br />

• All changes since last acknowledgement<br />

– Acknowledgement message<br />

• Data receiver acknowledges receipt of changes<br />

– Switch roles message<br />

• Data receiver now can send changes to replica relative<br />

• Online synchronization (connected on same<br />

network)<br />

– <strong>ArcGIS</strong> manages messages<br />

• Offline synchronization (not on same network)<br />

– Manual messaging required<br />

2008 Indiana GIS Conference

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