The following tables form part of a database held in an RDBMS: Employee (empNo, fName, IName, address, DOB, sex, position, deptNo) Department (deptNo, deptName, mgrEmpNo) Project (projNo, projName, deptNo) WorksOn (empNo, projNo, dateWorked, hoursWorked) where Employee contains employee details and empNo is the key. Department contains department details and deptNo is the key. mgrEmpNo identifies the employee who is the manager of the department. There is only one manager for each department. Project contains details of the projects in each department and the key is projNo (no two departments can run the same project). Works On contains details of the hours worked by employees on each project, and empNo/ projNo/dateWorked form the key. and 5.16 (Relational Algebra Only) Using the Employee/Departemtn/Project/WorksOn schema shown above, List the names and addresses of all employees who are maagers. 5.20 (Relational Algebra Only) Using the same schema as above, find out how many empoyees are managed by "James Adam