Hello Architect, thank you for your feedback. Most of the commands I wrote when covering the basics will be verified to see if the queries work properly when actually sent to the DB later on. You may have felt this way since you've only taken the early parts, and all related content is also organized in the lecture notes for you. Please refer to the basic note information we provide, and if you could also look at the practical queries that come up later and revise your review, it would be very helpful in creating the lectures. I would appreciate it if you could leave a review after taking more of the course. - By the way, English pronunciation is actually called various ways in practice as well. For example, some people call SELECT "select," while others call it "silikt." I just used the terminology I use in practice, so there might be some incorrect parts. I apologize for any inconvenience.