[ 의문점 데이터 ] difference between @JoinColumn and @PrimaryKeyJoinColumn (@JoinColumn vs @PrimaryKeyJoinColumn)
@JoinColumn vs @PrimaryKeyJoinColumn # 의문점 1. @JoinColumn과 @PrimaryKeyJoinColumn의 차이점이 무엇일까 2. @Id + @JoinColumn the same as just @PrimaryKeyJoinColumn? # 해결 1. @JoinColumn과 @PrimaryKeyJoinColumn의 차이점이 무엇일까 This enhanced support of derived identifiers is actually part of the new stuff in JPA 2.0 (see the section 2.4.1 Primary Keys Corresponding to Derived Identities in the JPA 2.0 specification)..