Question: express the following sql query as a rational algebra expression Express the following SQL query as a relational algebra expression. SELECT SS, Name, Dept FROM

express the following sql query as a rational algebra expression

Express the following SQL query as a relational algebra expression. SELECT SS, Name, Dept FROM Employee WHERE NOT EXISTS SELECT FROM Employee2 WHERE Employee2.SS Employee.SS AND Employee2,Name Employee,Name AND Employee2.Salary Employee.Salary AND Employee2.Dept Employee.Dept)

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