Question: Can the tag [firebase-database](https://stackoverflow.com/questions/tagged/firebase-database "show questions tagged 'firebase-database'") be renamed to [firebase-realtime-database](https://stackoverflow.com/questions/tagged/firebase-realtime-database "show questions tagged 'firebase-realtime-database'")?

As the [tag info](https://stackoverflow.com/tags/firebase-database/info) states the tag is for Firebase Realtime Database and since the arrival of [google-cloud-firestore](https://stackoverflow.com/questions/tagged/google-cloud-firestore "show questions tagged 'google-cloud-firestore'"), a different kind of database from Firebase, there have been an increasing amount of questions about Firestore tagged with [firebase-database](https://stackoverflow.com/questions/tagged/firebase-database "show questions tagged 'firebase-database'"). The reason for the mistagging is the fact that Firebase has multiple kinds of databases and a general name like *"firebase-database"* doesn't describe wich type of Firebase database it is about

To avoid these mistakes from now on I suggest the tag [firebase-database](https://stackoverflow.com/questions/tagged/firebase-database "show questions tagged 'firebase-database'") be renamed to [firebase-realtime-database](https://stackoverflow.com/questions/tagged/firebase-realtime-database "show questions tagged 'firebase-realtime-database'").

Answer: 
The [firebase-realtime-database](https://stackoverflow.com/questions/tagged/firebase-realtime-database "show questions tagged 'firebase-realtime-database'") tag sounds good to me. It's definitely been more work to retag the wrong "[firebase-database](https://stackoverflow.com/questions/tagged/firebase-database "show questions tagged 'firebase-database'") on a [google-cloud-firestore](https://stackoverflow.com/questions/tagged/google-cloud-firestore "show questions tagged 'google-cloud-firestore'") question" tags.

Any reason why we can't do this through a synonym though? If we just create the new tag, start using that, and then define the old tag as a synonym. We've done that with [firebase-functions](https://stackoverflow.com/questions/tagged/firebase-functions "show questions tagged 'firebase-functions'") (maps to [google-cloud-functions](https://stackoverflow.com/questions/tagged/google-cloud-functions "show questions tagged 'google-cloud-functions'")) and [firebase-firestore](https://stackoverflow.com/questions/tagged/firebase-firestore "show questions tagged 'firebase-firestore'") (maps to [google-cloud-firestore](https://stackoverflow.com/questions/tagged/google-cloud-firestore "show questions tagged 'google-cloud-firestore'")) too and the problem was quickly solved on those cases (although surprisingly not for [firebase-security-rules](https://stackoverflow.com/questions/tagged/firebase-security-rules "show questions tagged 'firebase-security-rules'")).
According to [Choose a Database: Cloud Firestore or Realtime Database | Firebase](https://firebase.google.com/docs/database/rtdb-vs-firestore), the official product names are now *"Cloud Firestore"* and *"Realtime Database"*.

As such, the suggested tags look like the optimal choice: they are both in the straightforward form of *"vendor-product"* -- which is as clear as we can get in this situation of similarly-named products.