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READ Free Dumps For Oracle- 1z0-001





Question ID 1563

Which ALTER command would you use to reinstate a disabled primary key constraint?

Option A

A.     ALTER TABLE cars
ENABLE CONSTRAINT cars_id

 

Option B

B.    ALTER TABLE cars
ADD CONSTRAINT cars_id_pk PRIMARY KEY (id);
 

Option C

C.    ALTER TABLE cars
ENABLE PRIMARY KEY (id) CASCADE;

 

Option D

D.    ALTER TABLE cars ENABLE PRIMARY KEY (id);

Correct Answer A
Explanation


Option A

A.    SELECT ename, sal FROM EMP
ORDER BY ename, sal;
 

Option B

B.    SELECT ename, sal
FROM EMP
ORDER BY sal DESC, ename ASCENDING;

 

Option C

C.    SELECT ename, sal FROM EMP
ORDER BY sal, ename;
 

Option D

D.    SELECT ename, sal
FROM EMP
ORDER BY sal DESC, ename;

Option E

E.    SELECT ename, sal
FROM EMP
SORT BY sal DESC, ename; 

Correct Answer D
Explanation

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