When setting up your database, you can assign Teams different levels of access.
Admin: Can update the connection and the access list.
Author: Can view the tables in the data warehouse and can create or edit worksheets which access the data directly.
Reader: Can only access the database indirectly through worksheets created by Editors or Admins. Viewers will not see the database in their list of connected databases when creating a Worksheet.
Users that are not on the access list cannot access Worksheets built on top of the database connection.
In some cases, you may need to whitelist Sigma's IP address: