3.11 Write the following queries in SQL, using the university schema. a. Find the names of all students who have taken at least one Comp. Sci. course; make sure there are no duplicate names in the result. b. Find the IDs and names of all students who have not taken any course offering before Spring 2009. c. For each department, find the maximum salary of instructors in that department. You may assume that every department has at least one instructor. d. Find the lowest, across all departments, of the per-department maximum salary computed by the preceding query.

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Jason, samantha, ravi, sheila, and ankit are preparing for an upcoming marathon. each day of the week, they run a certain number of miles and write them into a notebook. at the end of the week, they would like to know the number of miles run each day, the total miles for the week, and average miles run each day. write a program to them analyze their data. your program must contain parallel arrays: an array to store the names of the runners and a two-dimensional array of five rows and seven columns to store the number of miles run by each runner each day. furthermore, your program must contain at least the following functions: a function to read and store the runners’ names and the numbers of miles run each day; a function to find the total miles run by each runner and the average number of miles run each day; and a function to output the results. (you may assume that the input data is stored in a file and each line of data is in the following form: runnername milesday1 milesday2 milesday3 milesday4 milesday5 milesday6 milesday7.)

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