A summary of business activities of a "Course Registration System" for enrolling courses for students and for enrolled class lists for faculty members at an online university is as follows:

The Physics Department provides information on offered courses. Students request enrollment in offered courses and the system sends to each student an enrollment schedule. Faculty members receive enrolled class lists when the registration period is complete.

1. Draw a context-level data flow diagram for the "Course Registration System".

2. Explode the above context-level diagram by drawing the logical data flow diagram level 0 showing all the major processes.