과제(240521) - HackMD

## 과제 : 강의 영상 시청 및 정리 (데이터 모델링) [관계형 데이터 모델링](https://www.youtube.com/playlist?list=PLuHgQVnccGMDF6rHsY9qMuJMd295Yk4sa)

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