Database. please provide each steps in details

2. Consider the following schema: Employee (San. Name, Address) works on = ( WSsn, W Dnumber. Since) Department = (Dnumber. Dname, Mgr Ssn), where Mgr Ssn is a foreign key corresponding to the Son of the employee who manages that department, this is the implicit implementation of manages (!!!). (a) (20 points} Draw the ER diagram corresponding to the given schema (b) (20 points} Use relational algebra formal language to retrieve the address of all employees working in Dnumber=2 (c) Give the catalogue of this database