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Question ID 1565

The EMPLOYEE table contains these columns:
FIRST_NAMEVARCHAR2(25) COMMISSION NUMBER(3,2)
Evaluate this SQL statement:
SELECT first_name, commission
FROM employee
WHERE commission = (SELECTcommission FROMemployee WHEREUPPER(first_name) = 'SCOTT')
 
What would cause this statement to fail?
 

Option A

A.    There is more than one employee with the first name Scott.
 

Option B

B.    The FIRST_NAME values in the database are in lowercase.

 

Option C

C.    Scott has a NULL commission value.
 

Option D

D.    Scott has a zero commission value.
 

Option E

E.    There is no employee with the first name Scott.

Correct Answer A
Explanation


Question ID 1566

In SQL*Plus, you issued this command: DELETE FROM dept
WHERE dept_id = 901;
You received an integrity constraint error because a child record was found. What could you do to make the statement execute?
 

Option A

A.    Add the CONSTRAINTS CASCADE option to the command.
 

Option B

B.    Add the FORCE keyword to the command.
 

Option C

C.    You cannot make the command execute.

 

Option D

D.    Delete the child records first.

Correct Answer D
Explanation

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