While working as a frontend developer, I suddenly had to take on backend tasks as well, and I ended up having to design everything from the database to the application in a rush. At the time, knowing nothing, I designed the tables based only on what I had learned as an undergraduate. I got severely scolded by the DBA and kept overhauling the tables right up until launch 😆😆 As I overhauled the tables, I also had to overhaul the application code. It was so difficult.. If I had taken this course back then, I think I could have done the work much more smoothly. Thank you so much. Not only the course content, but also sharing those little nuggets of experience was really fun to watch. I'll enjoy watching the next course as well.