DBI202Xuất hiện trong 1 đề thi
Converting entity sets to relations
Các lựa chọn
ACustomers(SSN, Name, Addr, Phone)\nRooms(Number, Price)\nBookings(Start_day, End_day)
BCustomers(SSN, Name, Addr, Phone, Start_day, End_day)\nRooms(Number, Price, Start_day, End_day)\nBookings(SSN, Number, Start_day, End_day)
CCustomers(SSN, Name, Addr, Phone)\nRooms(Number, Price)\nBookings(SSN, Number, Start_day, End_day)
DCustomers(SSN, Name, Addr, Phone, Start_day, End_day)\nRooms(Number, Price, Start_day, End_day)\nBookings(Start_day, End_day)