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Hibernate ManyToOne与OneToOne

我看不出多对一关系与OneToOne关系的架构有什么不同:

@Entity
public class Order {

    @ManyToOne
    @JoinColumn(nullable = false)
    private Address address;
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VS

@Entity
public class Order {

    @OneToOne
    @JoinColumn(nullable = false)
    private Address address;
Run Code Online (Sandbox Code Playgroud)

有什么区别吗?

hibernate one-to-one many-to-one

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hibernate ×1

many-to-one ×1

one-to-one ×1