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Use schemas for questions. Product (maker, model, type) Pc(model, speed,ram,hd,price) Laptop (model ,speed, ram, hd,screen, price) Printer(model, color, type, price) Find model number and price

Use schemas for questions.

Product (maker, model, type)

Pc(model, speed,ram,hd,price)

Laptop (model ,speed, ram, hd,screen, price)

Printer(model, color, type, price)

Find model number and price of all laptops made by manufacturer B or manufacturer C

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