Draw a ER Diagram:

School needs to keep track of buildings, classrooms within the buildings, the teacher who teaches in the classrooms and the students that are being taught.

The building will have a unique name. Classroom will have a number. Room size must be at least 800 feet.

Each teacher will have a unique number and a phone number (cell and home)

Each student will have a unique number and an age.

Each building has at least one but can have many classrooms. Each classroom is located in one building.

Teacher can teach in many classrooms, or none. A classroom can be used for teaching by many teacher, or none. A teacher can teach many students (not more than 15), or none. Student is taught by one teacher.