Once your data source is connected to Studio, you can select components or tables from the data source to include in metrics.

Click the Get Tables button in the lower left on the main panel. All tables available for the data source are loaded.

Click All selected to include all tables, and click OK.

Including all tables in the database is the preferred method unless the number of tables is very large, or if security on the database prevents your user credentials from querying to get the full list of tables.

On the Actions toolbar, be sure to save the updated data source.