Hibernate级联删除

如果cascade属性是默认值"none",当hibernate删除一个持久化对象的时候，不会自动删除与它关联的其他持久化对象。如果希望自动删除它关联的其他持久化对象，可以把casacde属性设为"delete";

<set
	name="students"
	cascade="delete"
	inverse="true">
	<key column="school_id"/>
	<one-to-many class="Student"/>
</set>

  
delete from students where school_id =1;
delete from school where id=1;