I think this is the best class for mastering the basics! Since exams have been getting harder lately, I recommend solving many practice problems along with the lessons!

It's great because I can learn the concepts and practice solving problems in a short amount of time.

It was so overwhelming and I really didn't want to study while working, but your easy-to-understand explanations have given me confidence! I love that I can solve the problems now by listening to the lectures during my commute!

I failed the SQLD exam after studying on my own, so I decided to sign up for this course this time. Since it's still the beginning, I'm not entirely sure yet, but I think it will be good because it includes mock exams.

I am a non-major and passed with exactly 60 points after studying for one week. To be honest, I was too lazy to even finish one full round of past exam questions, but looking back, I think I passed thanks to these lectures. If you solve the "Yellow Book" (SQLD practice guide) while watching this lecture, it will be so difficult that you might lose your mind. For those whose priority is just passing the exam, I think it's better to solve all the past questions here and in other theory books first, and then only move on to the Yellow Book if you have time left. While it was good for catching concepts I missed, the Yellow Book is much harder than the actual exam difficulty... I think it would be great if there were more explanations connecting confusing concepts, especially for problems where the examiner is clearly trying to trick you, like those involving "Null."