# Database: University Example: Section

All courses are taught in sections or classes. These sections have students (M:N), professors (M:1), locations (M:1), etc.

## Section Table

Section

section_id | PK | Arbitrary primary key
section_num |  | Section number 1, 2, ... at an Ed Center
course_id | FK | Course which this is a section of.
edcenter_id | FK | Ed_Center where it's taught.
instructor_id | FK | Instructor who is teaching it.

As with many tables, this has an arbitrary primary key (`section_id`). Each section is an instance of teaching one course, and has one instructor.

## Section - Sample Data

section_id | section_number | course_id | instructor_id
--- | --- | --- | ---
1 | 1 | 33 | 92