List the non-trivial functional dependencies in the table shown in Figure 1. Sta
ID: 3867315 • Letter: L
Question
List the non-trivial functional dependencies in the table shown in Figure 1. State any assumptions you make about the data shown in this table.
15 points] An agency called Instant Cover supplies part-time/temporary staff to hotels within Scotland. The table shown in Figure 1 lists the time spent by agency staff working at various hotels. The National Insurance Number (NIN) is unique for every member of staff. NIN | contract o | hours | eName hNo hLoc 1135 C1024 1057 C1024 1068 C1025 1135 C1025 16 Smith H25 East Kilbride 24 Hocine D H25 East Kilbride 28 White T H4 Glasgow 15 SmithH4 Glasgow Figure 1: Instant Cover's contractsExplanation / Answer
Here the table has the following columns
The non trivial dependencies are
here the NIN->Contract No
NIN->Ename
it is non trivial because contact no uniquely depends on NIN(NIN is not subset of Contact no)
But the Trivial dependencies includes
{NIN,ContactNo}->Hno
here the contact no ,Hno,Hloc are the subset of the NIN
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