(Solved): Schema Diagram for University Database takes student ID name dept name tot cred course_id sec id sem ...

Schema Diagram for University Database takes student ID name dept name tot cred course_id sec id semester year grade advisor section course id sec_id semester year building room_no time_slot_id course course id title dept_name credits department dept_name building budget time slot time_slot id day start_time end time instructor classroom building TOOM no capacity prereg course_id prereq_id Mame dept_name teaches salary ID course id sec_id semester year Write the following queries in relational algebra, using the university schema a. Find the names of all students who have taken at least one Comp.Sci. course 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 Find the lowest, across all departments, of the per-department maximum salary computed by the preceding query Show transcribed image text Schema Diagram for University Database takes student ID name dept name tot cred course_id sec id semester year grade advisor section course id sec_id semester year building room_no time_slot_id course course id title dept_name credits department dept_name building budget time slot time_slot id day start_time end time instructor classroom building TOOM no capacity prereg course_id prereq_id Mame dept_name teaches salary ID course id sec_id semester year
Write the following queries in relational algebra, using the university schema a. Find the names of all students who have taken at least one Comp.Sci. course 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 Find the lowest, across all departments, of the per-department maximum salary computed by the preceding query