在数据库中使用NetBeans创建的实体类中没有任何关系

I'm using Netbeans to create entity class from database, I select all table in my database and the classes are created without any information about relations, like @OneToMany, @ManyToOne etc... This is an example of two tables I have in my DB, is there anything else I need to specify in the tables creation?I'm using Netbeans to create entity class from