See more:
(untagged)
"Draw a class diagram that describes the structure of a system, where the system can display a list of trucks, aeroplanes, cars, boats and bikes as well as detailed view of each vehicle.
Annotate your design to explain how it works and note any relevant assumptions you make."
I have designed a something like:
Vehicle
/ \ \
RoadVehicle Aeroplane Boat
/ \
MotorRoadVehicle Bike MotorBoat
Car Truck
They are not happy with my design and asked me to do it from scratch. They just told me that I am wrong with my comprehension but they did not provide any clues. Could any one give me any ideas to improve this design?