show the name and credit score of all customers.
select cust_name, credit_score from customer
which of them have a credit score below 100?
select cust_name from customer where credit_score < 100
Find the names of bank branches that have provided a loan to them.
select t2.bname from loan as t1 join bank as t2 on t1.branch_id = t2.branch_id join customer as t3 on t1.cust_id = t3.cust_id where t3.credit_score < 100