package com.student.dao; import com.student.bean.Clazz; import com.student.bean.Department; import com.student.bean.Major; import java.util.List; public interface OrgDao { List findAllDepts(); Department findDeptById(int id); boolean insertDept(Department dept); boolean updateDept(Department dept); boolean deleteDept(int id); List findMajorsByDept(int deptId); List findAllMajors(); Major findMajorById(int id); boolean insertMajor(Major major); boolean updateMajor(Major major); boolean deleteMajor(int id); List findClazzByMajor(int majorId); List findAllClazz(); Clazz findClazzById(int id); boolean insertClazz(Clazz clazz); boolean updateClazz(Clazz clazz); boolean deleteClazz(int id); }