普通表格和映射表

Question

我有一个JPA应用程序，该应用程序通过映射表关联两个对象：

围场

@Table(name = "wards")
    public class Ward extends AbstractBaseEntity {
                private static final long serialVersionUID = -5292952700297426004L;

                @ManyToOne
                @JoinColumn(name = "facility_id")
                private Facility facility;

                @Column(name = "name", length = 20, unique = false, nullable = false)
                private String name;
            }

床

@Table(name = "beds")
public class Bed extends AbstractBaseEntity {

@ManyToOne
@JoinColumn(name = "facility_id")
                    private Facility facility;

@Column(name = "name", length = 20, unique = false, nullable = false)
 private String name;
 }

映射对象：

@Entity
@Table(name = "locations")
            public class Location extends AbstractBaseEntity {
                private static final long serialVersionUID = 1L;

                @ManyToOne
                @JoinColumn(name = "facility_id")
                private Facility facility;

                @Column(name = "ward", length = 40, unique = false, nullable = true)
                private String ward;

                @Column(name = "bed", length = 40, unique = false, nullable = false)
                private String bed;
            }

我想我正在做书，但是我不确定在所有三个对象中都包含设施代码是否很好。我应该只在Locations中使用便利还是在三个表中多次引用便利？以后管理对象有什么意义吗？我需要保证记录的管理尽可能一致。