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양방향 매핑 Member 엔티티의 양방향 매핑은 단방향과 동일하다. @Entity public class Member{ @Id @GeneratedValue private Long id; @Column(name = "USERNAME") private String name; private int age; @ManyToOne @JoinColumn(name = "TEAM_ID") private Team team; //... } Team 엔티티는 컬렉션을 추가해야 한다. @Entity public class Team{ @Id @GeneratedValue private Long id; private String name; @OneToMany(mappedBy = "team") List members = new Arr..