# Additional configurations

To identify the lineage across your tools from origin to destination, you will need to connect your data sources to decube. For example, if you want to see a transformation from PostgreSQL table to dbt, you'll need to have both PostgreSQL and dbt connected to see the full lineage.

{% hint style="info" %}
It's best if you connect your data warehouses or relational databases first to decube if you haven't done so, before connecting your transformation tools or BI tools.
{% endhint %}

From the tools you've connected, we figure out the connection names referenced within your queries and list them out in the **Additional Config** so you can map them to existing connections within decube.

### Mapping the data source connections

1. Once you've connected your connections, all you need to do now is to head to the **My Account** page and see all your connections in the Data Sources tab.

<figure><img src="/files/pjtjRTDoAqWOJVqPu7iT" alt=""><figcaption><p>Head to the My Account page to see all the connected Data Sources</p></figcaption></figure>

2. Click on the **Modify** button on your data source. You will land on the **Credentials** tab.

<figure><img src="/files/PhMagr3sZnUdNyqp3Z2w" alt=""><figcaption><p>Modifying Data Source</p></figcaption></figure>

3. Go ahead and map the connections sources to the data sources that you have added into decube. Once done, click on **Save**.


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