Firebase Tutorial App
Working with Master-Detail (Hierarchical Database)
This Template App will show you how to implement hierarchical database with Firebase, our example will demonstrate how to implement a schema continents=>countries=>cities
Firebase includes different options for implementing a hierarchical database, but Thorium implements the Root Level Collection data structure as described in this document: https://firebase.google.com/docs/firestore/manage-data/structure-data
Another Approach
It is also possible to use custom firebase Repeater templates and to implement full CRUD functionalities (Create Read Delete Update), see the other Exemple below:
Exemple CRUD