title: How can I implement an invitation system using Flutter and Firebase realtime database
body: <p>I am developing a Flutter app that is using the firebase realtime database. The app shall be used collaboratively by users to collect and analyze data. Users are part of a team and the data that is collected will be associated with the team. For a user to join a team, they are required to use an invitation link that is sent out by the team leader. The invite shall use the teamId which is a unique identifier for each team.</p>
  <p>How could I go about this.</p>