Consider A Database Used To Record The Marks That Students

Consider a database used to record the marks that students get in different exams of different course offerings.

a. Construct an E-R diagram that models exams as entities, and uses a ternary relationship, for the above database.

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b. Construct an alternative E-R diagram that uses only a binary relationship between students and course-offerings. Make sure that only one relationship exists between a particular student and course offering pair, yet you can represent the marks that a student gets in different exams of a course offering.

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