branch(branch name, branch city, assets)

customer (customer name, customer street, cust omer city)

loan (loan number, branch name, amount)

borrower (customer name, loan number)

account (account number, branch name, balance )

depositor (customer name, account number)

Figure 5.25 Banking database

Consider the bank database of Figure 5.25 and the balance attribute of the

account relation. Write an SQL query to compute a histogram of balance

values, dividing the range 0 to the maximum account balance present, into

three equal ranges.