I Need the full answer of this using the tow methods ..Asap

Solve the following By using : A-SQL B-ALGEBRA 1. Let's have the following data base composed of three tables: DEPT (DEPTNO, DNAME, LOC) EMP (EMPNO, ENAME, JOB, MGR#, HIREDATE, SAL, COMM, DEPTNO#) SALGRADE (GRADE, LOSAL, HISAL) Generate the relational algebra expressions for the following queries: 1) List all employees' names. 2) List all employees' names with their salary. 3) List all employees' names and their department' names. 4) List all employees' names and Job for the department 40. 5) List the grades. . o