1. Using the requirements below, create a Level 0 data flow diagram to show the internal working processes of the system

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1. Using the requirements below, create a Level 0 dataflow diagram to show the internal working processes of the system.Be sure to include:
The external entities (users and external systems)Processes are uniquely numbered and labeled (remember numbers arejust for reference, they do not indicate order)Data stores uniquely labeledLabeled inbound and outbound data flow
Requirements:
The system shall allow students to request enrollment in acourseThe system shall allow the registrar’s office to input courses, butwill only create new records if the course doesn’t already exist inthe systemThe system shall allow the registrar’s office to input new studentrecords, but will only create new records if the student doesn’talready exist in the systemThe system shall send reports to the registrar’s office on courseenrollment dataThe system shall validate student enrollment requests againstcurrent course enrollments to not allow duplicate enrollment in thesame courseThe system shall enroll students in courses if they are not alreadyenrolledThe system shall return a success or error message to studentsbased on course enrollment transaction statusThe system shall store data about all active students, includingtheir unique student id, first name, last name, and emailaddressThe system shall store data about all courses, including the uniqueclass id, class subject, class number, and class nameThe system shall store student enrollment data, including studentid, class id, and enrollment date
Assumptions:
All students are active and eligible for enrollmentStudents are not required to enroll in any course, and courses arenot required to have any studentsStudents can only register for a course onceThere are no prerequisites for any courseThere is no enrollment capacity for each course