Learning About Database Theory

https://www.studytonight.com/dbms/

I was going over relational database stuff preparing for an interview and I stumbled across this guy's youtube channel (studytonight) leading me to his website.

This dbms course is excellent IMO, and if anyone needs a review or an introduction I'd recommend this guy.. It was much easier than scrolling through my 1100 page textbook on database systems and he explains it so well