[3.1_JDBC__120jdbc20202020.pdf](https://github.com/mrx-junwoo/SpringInActionPractice/files/6254516/3.1_JDBC__120jdbc20202020.pdf) [3.2__JPA__22020jpa20202020.pdf](https://github.com/mrx-junwoo/SpringInActionPractice/files/6254517/3.2__JPA__22020jpa20202020.pdf)
