Create From the UI

Log in to MongoDB Atlas.

Select the Data Federation option on the left-hand navigation.

Create a federated database instance.

1. Click the Create New Federated Database dropdown.

2. Select Manual Setup.

Select the configuration method.

• For a guided experience, click Visual Editor.

• To edit the raw JSON, click JSON Editor.

Specify your data store.

Create the virtual databases, collections, and views and map the databases, collections, and views to your data store.

1. (Optional) Click the for the:

   • Data Lake to specify a name for your federated database instance. Defaults to Data Lake[n].

   • Database to edit the database name. Defaults to Database[n].

     Corresponds to databases.[n].name JSON configuration setting.

   • Collection to edit the collection name. Defaults to Collection[n].

     Corresponds to databases.[n].collections.[n].name JSON configuration setting.

   • View to edit the view name.

   You can click:

   • Create Database to add databases and collections.

   • associated with the database to add collections to the database.

   • associated with the collection to add views on the collection. To create a view, you must specify:

     • The name of the view.

     • The pipeline to apply to the view.

       Note

       The view definition pipeline cannot include the $out or the $merge stage. If the view definition includes nested pipeline stages such as $lookup or $facet, this restriction applies to those nested pipelines as well.

     To learn more about views, see:

     • Views

     • db.createView

   • associated with the database, collection, or view to remove it.

2. Select External from the dropdown in the Datasets section.

3. Drag and drop the data store to map with the collection.

   Corresponds to databases.[n].collections.[n].dataSources JSON configuration setting.

Click Save.