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2024-09-12 21:29:45 0 举报自用
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user_id
StudentCourses
teacher_name
CourseMaterials
Teachers
m
Students
student_number
选择
favorite_time
course_id
n
Courses
material_title
course_id
favorite_id
1
student_number
password
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教授
上传
course_count
Users
student_name
teacher_number
course_name
teacher_id (
student_id
teacher_id
StudentFavorites
upload_date
class_number
作为
course_number
material_id
user_type
username
sudent_id
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