If storing 20,000 records about Student grades in a university - where each record contained separate...

  

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If storing 20,000 records about Student grades in a university - where each record contained separate fields for a unique id for the record (the primary key), the student's email address, phone number, a unique id of a course, the assessment type, and score - which format would have the least data redundancy? If storing 20,000 records about Student grades in a university - where each record contained separate fields for a unique id for the record (the primary key), the student's email address, phone number, a unique id of a course, the assessment type, and score - which format would have the least data redundancy?