# Create a Data Extension

Data Extensions are a great way to expand on your customer profiles by adding in additional data that links to one of the datamart fields. This can be used to link a preferred store ID to a list of stores and their locations or an assigned customer representative email address to a list of representatives and their contact information.

## Tutorial

**Please note:** To try out the feature, click the full screen icon [![Qx1Screenshot-2023-10-26-141632.png](https://resources.teksideconnect.com/uploads/images/gallery/2023-10/scaled-1680-/Qx1Screenshot-2023-10-26-141632.png)](https://resources.teksideconnect.com/uploads/images/gallery/2023-10/Qx1Screenshot-2023-10-26-141632.png) in the tutorial.

<iframe allowfullscreen="allowfullscreen" data-mce-fragment="1" height="500px" sandbox="allow-scripts allow-forms allow-same-origin allow-presentation" src="https://www.iorad.com/player/116602/Create-Data-Extensions?src=iframe" width="100%"></iframe>