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Computers and Technology, 03.03.2020 23:48, diawia
A STUDENT can take many COURSES and a COURSE can have more than one STUDENT enrolled in the course. In this case, both the "student_id" and "course_id" primary keys become foreign keys and primary keys in a new entity called COURSE-STUDENT. What is the main reason for creating a new entity?
a. To reinforce data accuracy
b. To preserve data completeness
c. To eliminate possible data redundancy
d. To achieve data consistency
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Answers: 3
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A STUDENT can take many COURSES and a COURSE can have more than one STUDENT enrolled in the course....
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