Version 1: Simple ER Diagram
This version focuses on the core entities and relationships.
* Entities:
* `Student`: StudentID (PK), StudentName, Email
* `Course`: CourseID (PK), CourseName, InstructorID (FK)
* `Instructor`: InstructorID (PK), InstructorName, Email
* `Feedback`: FeedbackID (PK), StudentID (FK), CourseID (FK), Rating, Comments
* Relationships:
* `Student` 1:N `Feedback` (One student can give multiple feedbacks)
* `Course` 1:N `Feedback` (One course can receive multiple feedbacks)
* `Instructor` 1:N `Course` (One instructor can teach multiple courses)
Diagram (simplified textual representation):
```
Student 1:N Feedback N:1 Course
| | |
| | |
| | |
1:1 N:1 N:1
| | |
| | |
| | |
Instructor
```
Version 2: More Detailed ER Diagram
This version adds more detail and considers different feedback types.
* Entities:
* `Student`: StudentID (PK), StudentName, Email, Year
* `Course`: CourseID (PK), CourseName, InstructorID (FK), DepartmentID (FK)
* `Instructor`: InstructorID (PK), InstructorName, Email, DepartmentID (FK)
* `Department`: DepartmentID (PK), DepartmentName
* `Feedback`: FeedbackID (PK), StudentID (FK), CourseID (FK), FeedbackDate, Rating (e.g., 1-5 scale)
* `FeedbackDetail`: FeedbackDetailID (PK), FeedbackID (FK), Question, Answer, FeedbackType (e.g., 'Course Content', 'Instructor Effectiveness', 'Overall Experience')
* Relationships:
* `Student` 1:N `Feedback`
* `Course` 1:N `Feedback`
* `Instructor` 1:N `Course`
* `Department` 1:N `Course`
* `Department` 1:N `Instructor`
* `Feedback` 1:N `FeedbackDetail`
Version 3: Adding Temporal Aspects
This version adds the concept of feedback submission periods/semesters.
* Entities: All entities from Version 2, plus:
* `Semester`: SemesterID (PK), SemesterName, StartDate, EndDate
* Relationships: All relationships from Version 2, plus:
* `Feedback` 1:1 `Semester` (Each feedback belongs to one semester)
Remember to choose the version that best suits your needs. You can also extend these models further by adding attributes as required (e.g., address for Student and Instructor, course description, etc.). A proper ER diagram would typically be drawn using a diagramming tool, showing entities as rectangles, attributes as ovals within rectangles, and relationships as lines connecting entities with cardinality notations (1:1, 1:N, M:N).