我正在尝试将以下ERD placed here规范化为3NF。
我已经完成了1NF但是，我仍然坚持将其正常化。下面的结构是否在3NF中指定？
Port (PortID,Name,Country,Population,PassPort_Req,DockingFee)
Port_Attractions (AttractionID, PortID, AttractionDescription)
Passenger (PassNum,Name, Nationality,Age)
Passenger_Address (PassNum,Street,City,State,Zip)
Ship (ShipNum, Name,Weight, YrBuilt, Capacity)
Sailor(SailorID, FName, LName, YearsService, Nationality)
Cruise (SerialNumber, SailingMonth, SailingDay, SailingYear, ReturnMonth, ReturnDay, ReturnYear, DeparturePort)