---
schema_version: "1"
id: 0d9f558372e9c999b25375a4a42c8f793066085230895d7eb90558f1e0360fc3
title: Data Extensions
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_dat_data_extension.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_dat_data_extension.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 7bc1ae4f200426c752e2fb9837862544b0ca699b8e76f79b195e3946420d87e5
description: Query your engagement data with data extension data to retrieve additional attributes and measurements. Identify trends and get marketing insights based on performance by audience attributes from your data extensions.
products:
  - Marketing
  - Marketing Cloud Intelligence
release: "264"
---
# Data Extensions

Query your engagement data with data extension data to retrieve additional attributes and measurements. Identify trends and get marketing insights based on performance by audience attributes from your data extensions.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Intelligence Reports Advanced</td></tr></tbody></table>

For example, if you’re interested in the number of opens and clicks based on the user’s geolocation, connect to a data extension that holds your subscriber geolocation data. You can then see where your users are engaging with your data.

- **[Connect to a Data Extension](https://help.salesforce.com/s/articleView?id=mktg.mc_dat_data_extension_connect.htm&release=264.0.0&type=5)**  
    Connect to a data extension to pull in additional attributes along with your engagement data. You can connect to any data extension that’s in your business unit and is below 50 million rows.
- **[Create a Join Between Engagement and Data Extension Data](https://help.salesforce.com/s/articleView?id=mktg.mc_dat_data_extension_join.htm&release=264.0.0&type=5)**  
    While connecting to a data extension, you can create a connection between the data extension and engagement data. This way when querying, you’re pulling in data from both datasets.
- **[Manage Data Extensions](https://help.salesforce.com/s/articleView?id=mktg.mc_dat_data_extension_manage.htm&release=264.0.0&type=5)**  
    All connected data extensions appear in the Setup tab. From here you can view more information about each data extension. If errors occur during the sync, they appear here. You can also disconnect a data extension if you no longer require it, and edit joined fields too.
- **[Troubleshoot Data Extension Failures](https://help.salesforce.com/s/articleView?id=mktg.mc_dat_data_extension_troubleshoot.htm&release=264.0.0&type=5)**  
    During the data extension sync process, different statuses appear. If for some reason the process fails, troubleshoot according to these guidelines.