Introduction to Realtime Database

Firebase Realtime Database is a cloud-based database that stores data in JSON format and updates it in real time for all connected clients. The fact that multiple clients can access a single Realtime Database instance and get timely updates on the most recent data makes it possible to create cross-platform apps using Flutter and Firebase.

Realtime Database structure

Data within Realtime Database is organized in a hierarchical structure resembling a JSON tree. Each piece of data added to the database becomes a node within this tree. To uniquely identify each tree or node, developers have the flexibility to assign custom keys, such as user IDs, or let Firebase automatically ...