After completing the 6-month national academy for Spring Framework Mybatis, I joined a company that uses Spring FrameBoot JPA. At first, I searched CRUD on Google and studied it in a haphazard manner. I was really lost and had a hard time. So, if I had known about this lecture first, I think it would have been really good. For those who are new to JPA, this is the best lecture I've ever seen. 1. The content is rich. 2. The explanation is detailed. I'll watch this lecture twice more, and when I understand the source code, I'll buy the book and get the basics. Thank you for uploading a good lecture.