Hibernate关联关系映射

关联关系映射的分类可以遵行这样一个原则：双向还是单项、是否有链接表， 依赖主键还是外键。?

<generator class="native"/>?

</id>?

</class>?

create table Person ( personId bigint not null primary key )?

create table PersonAddress ( personId not null, addressId bigint not null primary key )?

create table Address ( addressId bigint not null primary key )