## Students

StudentID | FullName
--- | ---
1 | John Doe
2 | Jane Smith
3 | Michael Brown
4 | Emily White
5 | David Green

## Courses

CourseID | CourseName | TeacherName
--- | --- | ---
1 | English | Mr. Johnson
2 | Math | Ms. Williams
3 | History | Mr. Taylor
4 | Art | Ms. Davis
5 | Biology | Dr. Baker

## Enrollments

StudentID | CourseID | Grade
--- | --- | ---
(→ Students.StudentID) | (→ Courses.CourseID) |
1 | 1 | -1
2 | 1 | -1
3 | 1 | -1
4 | 1 | -1
5 | 1 | -1
5 | 1 | -1