What are the top resources for learning about Databases, DBMS, SQL, NoSQL, etc? (Just enough to be dangerous)

I'll suggest the book Designing Data-Intensive Applications by Martin Kleppmann Has tons of knowledge on database, sql, nosql and distributed databases. After that, Database Internals by Alex Petrov should be a great deep dive imo. (Haven't read this one personally though!)

Thanks man, just looking to keep it lean. Any online resources/ small courses?

Same here Sudharshan, i had planned to explore database sometime in future. My primary goto resource would be Udemy. Bookmarked this course https://www.udemy.com/course/sql-and-postgresql/ Watching self paced videos works well for me than reading books. I would appreciate any advices/resource suggestions. I have very basic knowledge about SQL but wanted to be dangerous as Sudharshan said 😁

Try https://selectstarsql.com/

@broad-camera-13514 Mongodb have their own kind of university with all resources.

I learnt SQL from khan academy https://www.khanacademy.org/computing/computer-programming/sql