Problem
A. Create an XML schema for a catalog of cars, where each car has the child elements make, model, year, color, engine, number_of__doors, transmission_type, and accessories. The engine element has the child elements number_of_cylinders and fuel_systern (carbureted or fuel injected). The accessories element has the attributes radio, air_conditioning, power_windows, power_steering, and power_brakes, each of which is required and has the possible values yes and no.
B. Create an XML document with at least three instances of the car element defined in the XML schema.