1. [6] Reconsider the Banking database schema: branch (branch-name, branch-city, assets) customer (customer-name, customer-street, customer-city) account (account-number, branch-name, balance) loan (loan-number, branch-name, amount) depositor (customer-name, account-number) borrower (customer-name, loan-number) Write an RA query for each of the following. (a) Find the assets of the branch which has a customer with loan amount over $300. (b) Find account balances for downtown branch customers in the city of Omaha. (c) Find street and city names for customers with loan amount greater than $1,000