please can someone help me with this question The following three tables capture
ID: 3871019 • Letter: P
Question
please can someone help me with this question
The following three tables capture part of the information about a small airline operation. On each flight, individual seats are not assigned.
ScheduledFlightInfo:(Flightno, from, to, departureTime, arrivalTime)
ActualFlightInfo: (InfoId, FlightDate, FlightNo, actualDepartureTime, ActualArrivalTime, employeeNo, role, seats-remaining, airplane-serialNo)
Employee: (EmployeeNo, name, phone, jobTitle)
Identify functional dependency (or dependencies) for each numbered paragraph below. Use only fields in a table listed above. Consider all information given together. Identify which table each functional dependency is defined on. Do NOT add columns to the above two tables.
Explanation / Answer
Employee Table,FD:EmployeeName Employee Number,phone,JobTitle
1= Each flight number refers to one flight that goes from Source city to destination city.Flight numbers are unique.The table stores it arrival time and departure time .
2= The arrival and departure time of a flight on a given day are recorded in the ActualflightInfo table.
3=The database records the employeeNo and the role for each crewmember on each actual flight scheduled or flown on a particular date . Each employee serves only one role on a given flight scheduled or flown. An employee may serve different roles on different flights.
4=The number or remaining seat are recorded in database.
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