Specify the following queries in relational algebra on the database schema given in Exercise 5.14: Exercises 283 a. List the Order# and Ship_date for all orders shipped from Warehouse# W2. b. List the WAREHOUSE information from which the CUSTOMER named Jose Lopez was supplied his orders. Produce a listing: Order#, Warehouse#. c. Produce a listing Cname, No_of_orders, Avg_order_amt, where the middle column is the total number of orders by the customer and the last column is the average order amount for that customer. d. List the orders that were not shipped within 30 days of ordering. e. List the Order# for orders that were shipped from all warehouses that the company has in New York.