5. Find all actors whose last name contains an a' in the second position or first name ends with an a. 6. Find all theatres whose names have the pattern of 'name Theatre' (e.g. 'Worst Theatre' where 'Worst' is the name), and extract the name (e.g. Worst, use SUBSTR Bonus: 7. Find all theatres whose names DO NOT contain whitespaces between words? Hint: check the usage of regular expressions in Oracle, specifically REGEXP_LIKE Use BANK database, its tables, and their contents. You can get the table information from the command on an individual table. Understand the meaning of every attribute of each table DESC 8. Which individual (not business) customer has the maximum available balance in all of his or her accounts (means the total of his or her balance), print out his or her full name with column heading "Full Name" (concatenating the first name and last name, with a space in between, e.g. 'Di He'not 'DiHe') Hint: grouping, use subquery in FROM clause, nested subqueries