我正在研究如何创建一个web应用程序+到数据库的链接。项目 Spring 启动+百里香。实体：

@Entity
@Table(name = "childrens", schema = "public", catalog = "people")
@EqualsAndHashCode(of = "id")
@Getter
@Setter
@DynamicUpdate
@DynamicInsert
@SelectBeforeUpdate
public class PeopleEntity {
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Id
    private long id;
    private String name;
    @ManyToOne(fetch=FetchType.LAZY, cascade=CascadeType.ALL)
    @JoinColumn(name = "operation_id")
    private ChildrenEntity сhildrenEntityId;

    @OneToOne(fetch=FetchType.LAZY)
    //@JoinColumn(name = "blood_group_id")
    private BloodgroupEntity bloodgroupEntity;
}

@Entity
@Table(name = "childrens", schema = "public", catalog = "blood_group")
...
public class BloodgroupEntity {
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Id
    private long id;
    private String name;
    @OneToOne
    @JoinColumn(name="id")
    private PeopleEntity peopleEntity;
}

表格：

CREATE TABLE people (
    id BIGINT NOT NULL,
    NAME VARCHAR(100) NOT NULL,
    id_blood_group BIGINT NOT NULL,
    PRIMARY KEY ( pk_people )
)

ALTER TABLE public.people ADD CONSTRAINT fk_cblood_group FOREIGN KEY (id_blood_group) REFERENCES blood_group(id) ON UPDATE CASCADE

CREATE TABLE blood_group (
    id BIGINT NOT NULL,
    NAME VARCHAR(100) NOT NULL,
    id_children BIGINT NOT NULL,
    PRIMARY KEY ( pk_blood_group )
)

控制器

private List<OperationTableEntity> peopleEntityList;
private List<BloodgroupEntity> bloodgroupEntityList;

@GetMapping(value = "/add-product-type")
public String showAddOperation(@ModelAttribute("peopleEntityList") PeopleEntity peopleEntity
         Model model) {
    peopleEntityList = peopleEntityService.getAll();
    bloodgroupEntityList = bloodgroupEntityService.getAll();
    model.addAttribute("peopleEntityList", peopleEntityList);
    model.addAttribute("bloodgroupEntityList", childrenEntityList);
    return "add-people";
 }

@PostMapping(value = "/people/new")
public String createPeople(@ModelAttribute("peopleEntity") PeopleEntity peopleEntity) {
    peopleEntityService.save(peopleEntity);
    return "redirect:/add-product-type";
}

我在网络上使用thymeleaf。文件add-people.html：

...
<form id="f-prt-01" th:method="POST" th:action="@{/people/new}" th:object="${peopleEntity}" name="formPrType">
    <div class="form-group mt-1">
        <label for="inputName">Имя</label>
        <input type="text" class="form-control" id="inputName" placeholder="Имя" th:field="*{name}" autofocus required>

        <label for="inputGroupSelect02">группа</label>
        <div class="input-group mb-3">

            <select class="custom-select" id="inputGroupSelect02" th:field="*{сhildrenEntityId}">
                <option th:each="bloodgroupTable : ${bloodgroupEntityList}"
                        th:value="${bloodgroupTable.id}"
                        th:text="${bloodgroupTable.name}"/>
            </select>
        </div>
    </div>
    <button type="submit" class="btn btn-primary">Сохранить</button>
</form>

有人能看一下并告诉我是否正确实现了表的代码吗 PeopleEntity 以及 BloodgroupEntity ? i、 例如，一个人只能有一个血型，所以这种关系是一对一的。我在训练课上打了个比方。它们对每个人都是不同的。
提前谢谢。。。