administrator_user_login
admin_id*adin_pwd
student_project
stu_id@stu_project_id@stu_project_status//已修完，未修完stu_project_check//学生申请，教师审核，通过
project_info
project_id@project_contentproject_start_timeproject_end_timeproject_address
project
project_id*tea_id@project_nameproject_summaryproject_numproject_creditproject_check_status//教师提交，管理员审核，通过project_status//已选满 有空余
teacher_user_login
tea_id*tea_pwd
teacher_user
tea_id@tea_pwdtea_name tea_address tea_sex tea_phone tea_emailtea_projectnum
evaluation
project_id@tea_id@evalution
student_user_login
stu_id*stu_pwd
message
message_key*message_idmessage_content
student_user
stu_id@stu_pwdstu_namestu_addressstu_sexstu_phonestu_emailstu_projectnum
