DBdiagram.io - https://velog.io/@wildmental/%EA%B7%B8%EB%A6%AC%EA%B8%B0-%EA%B7%80%EC%B0%AE%EC%9D%80-ERD-DBdiagram.io%EB%A1%9C-5%EB%B6%84%EB%A7%8C%EC%97%90-%EC%99%84%EC%84%B1%ED%95%98%EA%B8%B0
[DB] 📚 데이터 모델링 개념 및 📈 ERD 다이어그램 그리는법 (1:N 관계) -https://inpa.tistory.com/entry/DB-%F0%9F%93%9A-%EB%8D%B0%EC%9D%B4%ED%84%B0-%EB%AA%A8%EB%8D%B8%EB%A7%81-1N-%EA%B4%80%EA%B3%84-%F0%9F%93%88-ERD-%EB%8B%A4%EC%9D%B4%EC%96%B4%EA%B7%B8%EB%9E%A8