All visitors to the MERN Classroom application will have the option to sign in and then enroll on any of the published courses. Enrolling on a course would give them access to the lesson details and would allow them to go through the lessons systematically to complete the course. In order to implement this feature, in this section, we will first define an Enrollment model to store enrollment details in the database. Then, we will add the backend API to create new enrollments when end users interact with the Enroll component that will be added to the frontend. Finally, we will implement the view that enables a student to see and interact with the content from the course on which they are enrolled.
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