View the exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

You wrote this SQL statement to retrieve EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, for all employees:
SELECT employee_id, first_name, department_name
FROM employees
NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

View the exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

The retrieve data for all the employees for their EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, the following SQL statement was written:
SELECT employee_id, first_name, department_name
FROM employees
NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

View the Exhibit and examine the data in the PROMOTIONStable.

PROMO_BEGIN_DATEis stored in the default date format, dd-mon-rr.
You need to produce a report that provides the name, cost, and start date of all promos in the POSTcategory that were launched before January 1, 2000.
Which SQL statement would you use?
SELECT promo_name, promo_cost, promo_begin_date

View the exhibits and examine the structures of the COSTSand PROMOTIONStables.


Evaluate the following SQL statement:
SQL> SELECT prod_id FROM costs
WHERE promo_id IN (SELECT promo_id FROM promotions
WHERE promo_cost < ALL
( SELECT MAX(promo_cost) FROM promotions
GROUP BY (promo_end_date-
promo_begin_date)));
What would be the outcome of the above SQL statement?

View the Exhibit and examine the structure of the CUSTOMERS table.

Evaluate the following SQL statement:

Which statement is true regarding the outcome of the above query?