Change Data Capture Developer Guide

Change Data Capture
Keep Your External Data Current with Change Data Capture
When Do You Use Change Data Capture?
Change Event Object Support
Select Objects for Change Notifications in the User Interface
Select Objects for Change Notifications with Metadata API and Tooling API
Change Event Message Structure
Merged Change Events
Other Types of Change Events: Gap and Overflow Events
Subscribe to Change Events
Monitor Change Event Publishing and Delivery Usage
Security Considerations
Change Event Considerations
Standard Object Notes
Change Events for Fields
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Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Keep Your External Data Current with Change Data Capture

Use Change Data Capture to update data in an external system instead of doing periodic exports and imports of data or repeated API calls. Capturing changes with Change Data Capture event notifications ensures that your external data can be updated in real time and stays fresh.