Using data sources
You can use Data sources in the Developer area to add new data sources and access those already added to your project.
Click Developer on the dashboard:
Then click Data sources:
The first time you open this, it might be empty.
Viewing details of data sources
Once data sources have been added, you can use the search field to find a specific data sources, or you can scroll through the list.
If you click on a data source, you'll open a panel on the right of your screen where you can find information about that particular data source. For example, which environments it's available in, its name, category, and icon.
Click the Edit schema button to open the schema editor to see what's in the data source schema. Here, you can check the JSON schema or edit it. If you make any changes, you must keep backwards compatibility, or it could break your site.
Adding a data source
To add a new data source, click the Create schema button in the top right of the screen.
See the developing a data source extension article and the using the schema editor article for more information.