Generate an Entity-Relationship Diagram in Atlas

In Atlas, go to the Data Explorer page for your project.

1. If it's not already displayed, select the organization that contains your project from the Organizations menu in the navigation bar.

2. If it's not already displayed, select your project from the Projects menu in the navigation bar.

3. In the sidebar, click Data Explorer under the Database heading.

   The Data Explorer displays.

Open the Data Modeling tab

In the left sidebar, click Data Modeling.

Click Generate diagram.

If you have existing diagrams saved in the Data Modeling tab, you can create a new diagram by clicking Generate new diagram in the upper-right corner of the screen.

Name your diagram.

Select your MongoDB connection.

Use the drop-down menu to select which MongoDB connection to use to generate your diagram. The Active label appears under any currently active connection name.

Select your database.

Use the drop-down menu to select which database to use for your data model diagram.

Select collections.

Use the checkboxes to select which collections to include in your data model diagram.

(Optional) Choose if Atlas automatically infers relationships between collections.

In the Select collections modal, you can choose whether you want Atlas to Automatically infer relationships between collections. When enabled, Atlas analyzes the selected collections and adds relationships based on indexed fields that contain references to other collections.

You can also manually add and edit relationships after you generate your diagram.

Click Generate.

Atlas generates an entity-relationship diagram with the selected collections and displays it in the current tab.

After you generate a diagram, Atlas displays the existing diagrams in the Data Modeling tab.