Sob, sob. Every time I listen to your lecture, I feel like I should have heard this during the interview. If I had listened, I would have answered it. Especially the transactions.. ㅋㅋ큐ㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠThese days, I've been really devoting all my time to studying. You are my role model as a developer. I also want to become a great developer who loves development and develops like developer Kim Young-han. I will never lose this beginner's mind and will always develop. I want to try to reach the best I can in my line. I can feel your sincerity in your lectures!! Please always give us good lectures~~