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In designing an ER diagram for the "EduSphere" platform, the primary goal is to represent the main components of an online educational ecosystem, capturing entities such as Students, Courses, Instructors, Enrollments, and Assessments, along with their attributes and relationships. The Student entity includes attributes such as StudentID (Primary Key), Name, Email, DateOfBirth, and ContactNumber. Each student can enroll in multiple courses, establishing a many-to-many relationship between Student and Course entities. To resolve this many-to-many relationship, an Enrollment associative entity is created, which includes EnrollmentID (Primary Key), EnrollmentDate, and Grade as attributes. The cardinality constraint indicates that a student can enroll in zero __________ ___ ______ _______ ___ ____ ________ ______.
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