In Power Apps, add a data connection to an existing canvas app or to an app that you're building from scratch. Your app can connect to SharePoint, Common Data Service, Salesforce, OneDrive, or many other data sources.Note:Add data source1. In the center pane, select connect to data to open the Data pane.2. Select Add data source.3. If the list of connections includes the one that you want, select it to add it to the app. Otherwise, skip to the next step. 4. Select New connection to display a list of connections. 5. In the search bar, type or paste the first few letters of the connection you want, and then select the connection when it appears. 6. Select Create to both create the connection and add it to your app.Reference: https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/add-data-connection
In Power Apps, add a data connection to an existing canvas app or to an app that you're building from scratch. Your app can connect to SharePoint, Common Data Service, Salesforce, OneDrive, or many other data sources.
Note:
Add data source
1. In the center pane, select connect to data to open the Data pane.
2. Select Add data source.
3. If the list of connections includes the one that you want, select it to add it to the app. Otherwise, skip to the next step.
4. Select New connection to display a list of connections.
5. In the search bar, type or paste the first few letters of the connection you want, and then select the connection when it appears.
6. Select Create to both create the connection and add it to your app.
Reference: https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/add-data-connection