You have been hired to create a database for a small liberal arts college. Below you begin to learn more about the requirements of your project. Draw an ER Diagram to model the college database. List any assumptions you make, on a separate PDF page of text added to the diagram

a) Students can enroll in zero or more sections of courses each term. A course can have multiple sections being offered per term. Some terms no section of a course may be offered. Without student enrollment a section will not be offered. A Course Registration Number (CRN) uniquely identifies each section. A students are uniquely identified by their Student ID and a Course is uniquely identified by its course ID.

b) Instructors can teach zero or more sections per term. Each section must have only one instructor. The instructor assigns a grade to the student when he/she completes a section. Instructors a have unique Employee IDs.

c) Each section has at least one Class Session (uniquely identified by a combination of building, room number, day-of-week, time, and term) scheduled. No two sections can be scheduled to occur in the same room in the same building at the same day-of-week, time, and term. Collectively, "building" and "room number" shall be referred to as a "location". By definition a Class Session must be associated with a Section.

For the purposes of this diagram, do not use a relationship attribute unless the attribute cannot be migrated to one of the participating entity types; do not model Location as an entity type; and do not have "assigns grade" (or "gives grade", or similar) as a relationship type (instead you can use a relationship attribute named "grade").