Question: Please write a single relational algebra expression for the following queries from database. 1 . Query 1 : Retrieve the LNAME, SSN , BDATE, ADDRESS,

Please write a single relational algebra expression for the following queries from database.
1.Query 1 : Retrieve the LNAME, SSN, BDATE, ADDRESS, SEX and SALARY of all employees who work in department 5.
2.Query 2: Retrieve the names and salaries of all employees who work in department 1.
Please write a single relational algebra expression for the following queries

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