Ok so I am currently trying to set up a Postgres Database on IntelliJ and I'm running into an issue. I was going through the settings trying to understand the different configurations and get a better understanding of what was going on as I've never dealt with any kind of SQL related databases before. Not to my knowledge at least. When I click on the schema tab, this prompt shows up:

The specified user/password combination is rejected: [08004] The server requested password-based authentication, but no password was provided.

This is followed by a prompt asking for a username & password. I entered root (literally) in the username section, and a made up password in the password section, and I got this error message:

The specified user/password combination is rejected: [28P01] FATAL: password authentication failed for user "root".

I am not sure what I am supposed to do as I was never asked to set up a password. From what I get from the prompt, a username seems to have already been defined by IntelliJ. How do I find out what that username is and reset the password? And if that's not the way to go, how should I go about solving this issue?

EDIT: I finally figured it out. The username had to be the same as the name of my database. From then I was able to set up my password, and everything worked fine.