Question
Write the following queries in relational algebra, using the university schema. A. For each department, find the average salary of instructors in that department. You
Write the following queries in relational algebra, using the university schema.
A. For each department, find the average salary of instructors in that department. You
may assume that every department has at least one instructor.
B. Find the IDs and names of all students whose total credit hours are more than 50.
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Performing With Computer Applications Personal Information Manager Word Processing Desktop Publishing Spreadsheets Databases Presentations Assessment Manager
Authors: Iris Blanc
3rd Edition
141886515X, 978-1418865153
