Examine this SQL statement:
DELETE FROM employees e
WHERE EXISTS
(SELECT'dummy'
FROM emp_history
WHERE employee_id = e.employee_id)
Which two are true?

Which three statements execute successfully?
A)

B)

C)

D)

E)

F)

G)

Which two are the minimal requirements for a self-join? (Choose two.)

View the Exhibit and examine the description of the EMPLOYEEStable.

You want to calculate the total renumeration for each employee. Total renumeration is the sum of the annual salary and the percentage commission earned for a year. Only a few employees earn commission.
Which SQL statement would you execute to get the desired output?
SELECT first_name, salary, salary*12+(salary*NVL2 (commission_pct,

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

Which two tasks would require subqueries or joins to be executed in a single statement? (Choose two.)