When creating a new MySQL RDS instance, named app-dbid, the role type says master
![enter image description here](https://i.stack.imgur.com/doCHB.png)
When creating a MySQL RDS instance that is from the snapshot of app-dbid, naming it app2-dbid, the role type says Instance.
![enter image description here](https://i.stack.imgur.com/usWLz.png)
I was curious what these terms mean, and what the ramifications are of deleting the "master" app-dbid but keeping the app2-dbid instance