models:
  - name: courses
    description: Each record represents a course.
    columns:
      - name: course_id
        description: Unique identifier for the course
      - name: courselevel
        description: Course level
      - name: number_of_professors
        description: Number of professors teaching the course, replace NULL values with 0. Professor refers to professor = 1 in the person table.
      - name: number_of_professors_not_faculty
        description: Number of professors teaching the course who are not faculty, replace NULL values with 0. Faculty refers to hasposition <> '0' in the person table.
      - name: number_of_professors_faculty
        description: Number of professors teaching the course who are faculty, replace NULL values with 0. Faculty refers to hasposition <> '0' in the person table.
      - name: taught_by_more_than_4_people
        description: Set to 1 if the course is taught by more than 4 people, otherwise, set to 0
      - name:  taught_by_the_advisors
        description: Set to 1 if the course is taught by the advisors who gave advice to student, otherwise, set to 0