Database Exercise 6.5.2 write the following database modifications, based on the database schema Classes(class, type, country, numGuns, bore, displacement) Ships(name, class, launched) Battles(name, date) Outcomes(ship, battle, result) a) Modify the Classes relation so that gun bores are measured in centimeters (1 inch = 2.54 centimeters) and displacement are measured in metric tons (1 metric ton = 1.15 tons). b) Delete all classes with two or fewer ships. C) Each class is required to have a ship with the class name launched the same year the first ship in the class was launched. Add this fact to the database, for all the classes that do not satisfy it. I am using MySQL and these are database querys