Course Solutions Uncategorized (Solved) : Please Answer Exercise 243 Parts H Charge Multiple Questions Thanks Hint H Ships Built Cla Q26520447 . . . .

(Solved) : Please Answer Exercise 243 Parts H Charge Multiple Questions Thanks Hint H Ships Built Cla Q26520447 . . . .

 

Exercise 2.4.3: This exercise builds upon Exercise 2.3.2 concerning Word War II capital ships. Recall it involves the following relations Classes(class, type, country, numGuns, bore, displacement) Ships (name, class, launched) Battles (name, date) Outcomes (ship, battle, result) Figures 2.22 and 2.23 give some sample data for these four relations Note that, unlike the data for Exercise 2.4.1, there are some dangling tuples in this data, e.g, ships mentioned in Outcomes that are not mentioned in Ships Write expressions of relational algebra to answer the following queries. You may use the linear notation of Section 2.4.13 if you wish. 

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