I recommend this course to those who have some knowledge of MySQL, and for them, this is a course that can make the basics and advanced courses even more solid. I was impressed by this, so I will leave a review of the course in the form of a 6-line poem by MySQL. Ma: This is a course that finally allows you to understand the database. E: Even if an error occurs, it is explained in detail so that you can solve it well. Q: QNA is also kind, L: This course gave me the confidence to become a lit developer. Thank you~~