Database relational algebra

Given the following database schema E - Employee (Ename, SSN, Age, salary, Supervisor_SSN, Dno) D Department (Dname, Dnumber, Dlocation, Manager_SSN, Mgr_StartingDate) P - Project (Pname, Pnumber, Plocation) W- Works_On (ESSN, Pno, Hours) De - Dependent (ESSN, D name, DoB, Relationship) and the following set of foreign keys: EmployeeSupervisor-SSN EmployeeSSN Employee,Dno Department"Dnumber Department,Manager. SSN Employee,SSN works-ON.ESSN Employee.SSN Works-On.Pno ProjectPnumber Dependent.ESSN Employee.SSN f. Find the names of all employees who have a dependent with the same name as themselves; Find the names and SSNs of employees who worked on EVERY project located in Brooklyn; Find the names of those who worked on exactly two projects; g. h