Q$1$: Create a Function CheckCustomerBalance that takes as input customer's ID and it returns the total amount owed by the customer.

Q$2$: Create a Procedure "CustomersDetails" that retrieves each customer from the Customer table and creates a list that displays each customer's name, address, daytime phone number and the total amount owed by the customer $($using the previous function in Q$1.$ Print the heading at the beginning of the list identifying it as the "ClearWater Traders Customers". At the end, print out the total amount owed by all customers.

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