In one of my android application, I am using Firebase Realtime Database. Now, I want to upgrade existing data with new Cloud Firestore, So please let me know is that possible?
Thanks in advance
You can certainly write code to copy your data from one place to another. There is no automated process, since the two databases are designed very differently from each other. You will need to make decisions about how to structure your collections and documents in Firestore, because Realtime Database has no such concepts.
https://firebase.google.com/docs/firestore/firestore-for-rtdb