Please solve d and e parts in relational algebra with symbols.

Parts(pno, pname, qoh, price, qlevel) Customers(cno, cname, street, zip, phone) Employees(eno, ename, zip, hidate) Zip codes(zip, city) Orders(ono, cno, eno, received, shipped) Odetails(ono, pno, qty) Che attribute names are self-explanatory: qoh stands for quantity on hand. Specify the following ueries in Relational Algebra. a) Retrieve the numbers and names of parts that cost more than $50.00. b) Retrieve the names and cities of employees who have taken orders for parts costing less than $100.00. c) Retrieve the pairs of customer numbers of customers who live in the same ZIP Code. d) Retrieve the names and phone numbers of customers who have ordered parts from employees living in New Orleans. e) Retrieve the numbers and names of customers who have ordered parts costing more than $50.00 f) Retrieve the numbers and names of customers who have not placed an order. g) Retrieve the numbers and names of customers who placed at most one order. h) Retrieve the names of customers who placed maximum number of orders for Screwdriver" (pname). i) Retrieve the names of customers who placed maximum total amount of orders (quantity) for "Screwdriver" (pname)