Firebase data is retrieved by either a one time call to GetValueAsync() or attaching to an event on a FirebaseDatabase reference . The event listener is called once for the initial state of the data and again anytime the data changes.
Read moreHow do I save and recover data from Firebase?
Go to the Firebase Console, select your project and click on the Database tab. Scroll down and you will find a Realtime Database section. Click on Create database, select the Start in test mode option and then click Enable.
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