I need help on those two!!

SELECTICustomer NumberiIcustomer Namel Rep Numberillirst Namelllast Namrl IcustomerilBook WHERE Rep Number-1Book ReplIBook Rep Nurmbern ORDER customer Number1 REY The accompanying figure shows a SQL query to join two tables. When tables appear in the FROM clause, you can gave each table a(n) or an altermatave name that you can use in the rest of the statement. a, alias b variable c locus d pseudonym