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並前往https://newbedev.com/what-s-the-difference-between-joincolumn-and-mappedby-when-using-a-jpa-onetomany-association

What's the difference between @JoinColumn and mappedBy ...

Since many to one are (almost) always the owner side of a bidirectional relationship in the JPA spec, the one to many association is annotated by @OneToMany( ...

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查詢 「OneToMany」的人也找了:

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