Examine the description of the ENPLOYES table:

Which query requires explicit data type conversion?

Which three statements are true regarding the data types?

Examine the structure of the ORDERS table: (Choose the best answer.)

You want to find the total value of all the orders for each year and issue this command:
SQL> SELECT TO_CHAR(order_date,'rr'), SUM(order_total) FROM orders
GROUP BY TO_CHAR(order_date, 'yyyy');
Which statement is true regarding the result?

Examine this SQL statement:

Which two are true?

In which three situations does a transaction complete? (Choose three.)