You DO NOT need to answer 1-5! I have done those. Please just answer 6-10! Thank you!

Tools Window Help scOSC330-A2-2.pdf (page 1 of 3) Search Consider a database schema consisting of the foliowing four relational schemas: Product (maker, model, type) PC (model, speed, ram, hd, price) Laptop (model, speed, ram, hd, screen, price) Printer (model, color, type, price) Sample data for each relation is provided below. Write expressions of relational algebra to answer the following queries. Also, for the data provided below, show the result of your query. However, your answer should work for arbitrary data, not just the data below 1. What PC models have a speed of at least 3.00? 2. Which manufacturers make laptops with a hard disk of at least 100GB? 3. Find the model number and price of all products (of any type) made by manufacturer B. 4. Find the model numbers of all color laser printers. 5. Find those manufacturers that sell Laptops, but not PC's 6. Find those hard-disk sizes that occur in two or more PC's 7. Find those pairs of PC models that have both the same speed and RAM. A pair should be listed only once; e.g., list (i.j) but not G. i). Find those manufacturers of at least two different computers (PC's or laptops) with speeds of at least 2.80. 8. 9. Find the manufacturer(s) of the computer (PC or laptop) with the highest available speed 10. Find the manufacturers of PC's with at least three different speeds