The relation shown in Figure 15.11 lists the students (studentName) enrolled in a postgraduate program at Mzumbe University. Every student is required to provide information concerning names of sponsor(s) ( sponsorName), at least two referees (refereeName), and three supervisors (supervisorName). Assume that sponsors, referees and supervisors are not allowed to be related to more than one student.
(a) Describe why the relation shown in Figure 15.11 is not in 4NF.
(b) The relation shown in Figure 15.11 violates normalization principles. What are the problems users are likely to face?
(c) Describe how you would normalize the relation shown in Figure 15.11 to 4NF.
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