Depends upon what you are optimizing. If you are optimizing for learning as few tools as possible then yes, learning PostgreSQL as your one database is a good i

Depends upon what you are optimizing. If you are optimizing for learning as few tools as possible then yes, learning PostgreSQL as your one database is a good idea. Personally I use both PostgreSQL and SQLite. I like SQLite because it's a lot nicer to work with, it's easier to quickly develop for and the ease of deployment and operations can't be beat. I use PostgreSQL when working with other people mostly because it's what everyone else knows and it's great for large systems.