2.15 Consider the bank database of Figure 2.18. Give an expression in the relational algebra for each of the following queries: branch(branch_name, branch_city, assets) customer (ID, customer name, customer_street, customer_city) loan (loan_number, branch_name, amount) borrower (ID, loan_number) account (account_number, branch_name, balance) depositor (ID, account_number) Figure 2.18 Bank database. A. Find each loan number with a loan amount greater than $10000. B. Find the ID of each depositor who has an account with a balance greater than $6000. C. Find the ID of each depositor who has an account with a balance greater than $6000 at the "Uptown" branch.

2.15 Consider the bank database of Figure 2.18. Give an expression in the relational algebra for each of the following queries: branch(branch_name, branch_city, assets) customer (ID, customer name, customer_street, customer_city) loan (loan_number, branch_name, amount) borrower (ID, loan_number) account (account_number, branch_name, balance) depositor (ID, account_number) Figure 2.18 Bank database. A. Find each loan number with a loan amount greater than $10000. B. Find the ID of each depositor who has an account with a balance greater than $6000. C. Find the ID of each depositor who has an account with a balance greater than $6000 at the "Uptown" branch.