Design a generalization-specialization hierarchy for a motor-vehicle sales company. The

company sells motorcycles which have an engine number and cost; cars which have a

chassis number, an engine number, seating capacity and cost; trucks which have chassis

number, an engine number and cost.

Design a generalization-specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles which have an engine number and cost; cars which have a chassis number, an engine number, seating capacity and cost; trucks which have chassis number, an engine number and cost