# Incremental extraction

> For most source systems, CData Sync has preconfigured how incremental extractions should be performed. If that's not the case, the settings have to be edited manually to perform incremental extractions. For more on how to do this, refer to the official [CData Sync documentation](https://www.cdata.com/kb/entries/sync-incremental-config.rst).

For most source systems, CData Sync has preconfigured how incremental extractions should be performed. If that's not the case, the settings have to be edited manually to perform incremental extractions. For more on how to do this, refer to the official [CData Sync documentation](https://www.cdata.com/kb/entries/sync-incremental-config.rst).

## Introduction

Depending on your source system, it is possible to run incremental data extraction with CData Sync.

![Incremental extraction schema](https://dev-assets.cms.uipath.com/assets/images/process-mining/process-mining-incremental-extraction-schema-300258-eb19e24e-f4b0e165.webp)

## Check incremental settings

For most source systems, CData Sync has preconfigured how incremental extractions should be performed. If that's not the case, the settings have to be edited manually to perform incremental extractions. For more on how to do this, refer to the official [CData Sync documentation](https://www.cdata.com/kb/entries/sync-incremental-config.rst).

## Running incremental extraction

Follow these steps to make sure incremental data extractions run properly.

1. Start the CData Sync Admin console and login as and administrator using the credentials defined during installation of CData Sync.
2. Go to **Jobs** and select the extraction job to display the job settings.
3. Go to the **Advanced** tab, and edit the **Replication** Option to deselect the **Drop Table** option. This enables incremental extraction.

The first time the CData Sync extraction job runs, a full extraction is performed and all source data is extracted. Every next time the CData Sync extraction job runs, only the data that has changed in the source is extracted and the delta is added to the already extracted data.

For more information on incremental data extraction with CData Sync, refer to the [official CData Sync documentation](https://cdn.cdata.com/help/ASK/sync/Advanced-Job-Options.html).