> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prequel.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Change tracking

> Tracking transfer completion at the destination

After each successful transfer, Prequel writes a change tracking artifact to the destination. This allows downstream pipelines and your customers to determine when data was last synced for each model.

The artifact type depends on the destination:

| Destination type            | Change tracking artifact                                                                |
| :-------------------------- | :-------------------------------------------------------------------------------------- |
| Database / data warehouse   | [`_transfer_status` table](/export/features/transfer-status-table)                      |
| Object storage              | [Manifest files for object storage](/export/features/manifest-files-for-object-storage) |
| Spreadsheet (Google Sheets) | Not available                                                                           |