Write the following constraints on attributes from our example schema a) The speed of a laptop must be at least 2.0. b) The only types of printers are laser, ink-jet, and bubble-jet. c) The only types of products are PC’s, laptops, and printers. ! d) A model of a product must also be the model of a PC, a laptop, or a printer.

the correct option is (d) vin label

vin stands for vehicle information number. this is a thin metallic plate attached to the engine of the vehicle and it includes all the important information which are related to the vehicle. it also provides the information whether the vehicle has been stolen or not because the replacement and alternation of vin number creates difference in the exact number printed on the vin and carved on the engine.