The lecture itself is not bad, but... there are some parts where the lecturer's saliva is being swallowed, the sound of his lips being licked, and the recording is not encoded, so there are parts where the explanation is missing. It may be minor, but it is very annoying to listen to the lecture. And this lecture is a very basic lecture. If I may wish, I hope that there will be a lecture on PL/SQL's TRIGGER, function, CURSOR, package, and PROCEDURE.