Class scheduling ERD

Suppose you have the following scenario:

A college of Computer Sciences has hired you to create a DBMS to help in scheduling classes. After several interviews with the president, you have come up with the following list of entities, attributes and initial business rules:

• Room is identified by Building ID and Room No and also has a Capacity. A room can be either a lab or a classroom. If it is a classroom, it has an additional attribute called Board Type.
• Media is identified by MType ID and has attributes of Media Type and Type Description.
• Computer is identified by CType ID and has attributes Computer Type, Type Description, Disk Capacity, and Processor Speed.
• Instructor has identifier EmpID and has attributes Name, Rank, and Office Phone.
• Timeslot has identifier TSIS and has attributes Day of Week, Start Time, and End Time.
• Course has identifier Course ID and has attributes Course Description and Credits. Courses can have one, none, or many prerequisites. Courses also have one or more sections.
• Section has identifier Section ID and attributes Enrollment Limit.