Consider the following table and functional dependencies: An agency called Instant Cover supplies part-time/temporary staff to hotels throughout Scotland. The table shown in Figure below lists the time spent by agency staff working at two hotels. The National Insurance Number (NIN) is unique for employee. NIN ContractNo hoursPerWeek eName hotelNo hotelLocation C1024 Edinburgh Edinburgh 113567WD 16 John Smith H25 234111XA C1024 24 Diane Hocine H25 712670ΥD C1025 28 Sarah White H4 Glasgow Glasgow 113567WD C1025 16 John Smith H4 NIN -> eName NIN , ContarctNo -> hoursPerWeek ContarctNo -> hotelNo , hotelLocation hotelNo -> hotelLocation a. The table is susceptible to update anomalies. Provide examples of insertion, deletion, and modification anomalies. b. Describe and illustrate the process of normalizing the table to 3NF. State any assumptions you make about the data shown in this table.
Consider the following table and functional dependencies: An agency called Instant Cover supplies part-time/temporary staff to hotels throughout Scotland. The table shown in Figure below lists the time spent by agency staff working at two hotels. The National Insurance Number (NIN) is unique for employee. NIN ContractNo hoursPerWeek eName hotelNo hotelLocation C1024 Edinburgh Edinburgh 113567WD 16 John Smith H25 234111XA C1024 24 Diane Hocine H25 712670ΥD C1025 28 Sarah White H4 Glasgow Glasgow 113567WD C1025 16 John Smith H4 NIN -> eName NIN , ContarctNo -> hoursPerWeek ContarctNo -> hotelNo , hotelLocation hotelNo -> hotelLocation a. The table is susceptible to update anomalies. Provide examples of insertion, deletion, and modification anomalies. b. Describe and illustrate the process of normalizing the table to 3NF. State any assumptions you make about the data shown in this table.
Chapter1: Overview Of Database Concepts
Section: Chapter Questions
Problem 16MC
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