QUESTION 4 Provided is the shorthand representation of a database for a customer's ordering system, use this to answer the questions below. Customer(CustomerKey, Firstname, Secondname, address, Mobile, Creditlimt, activeflag) Product(Productid, Description, Quantityinstock,price) Orders(Ordernumber, CustomerKey, Productid, Quantityordered, price, Order_date) The primary keys are underlined. Write SQL queries to answer the following: (a) Write CREATE TABLE statement for each table in the relational schema described above. Select appropriate data types for each attribute. Remember to set the primary and foreign keys. (10 marks) (b) Write an SQL statement that will increase all the product prices by 10%. (5 marks) (c) Write an SQL statement which update the order price on the order table, with this new price, if the order_date was this current year. (5 marks) (d) Write an SQL statement that will delete customer(s) that have their active flag set to 0. What are the special considerations when deleting tables?