GATE | GATE-CS-2000 | Question 23
Given the relations
employee (name, salary, deptno) and
department (deptno, deptname, address)
Which of the following queries cannot be expressed using the basic relational algebra operations (U, -, x,
,
, p)?
(A) Department address of every employee
(B) Employees whose name is the same as their department name
(C) The sum of all employees’ salaries
(D) All employees of a given department
Answer: (C) Explanation: See question 1 of
https://www.geeksforgeeks.org/database-management-system-set-1/Quiz of this Question
Last Updated :
28 Jun, 2021
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