View the following SQL statements:
Transaction T1
INSERT INTO hr.regions VALUES (5,’Pole’);
COMMIT;
Transaction T2
UPDATE hr.regions SET region_name=’Poles’ WHERE region_id = 5; COMMIT;
Transaction T3
UPDATE hr.regions SET region_name=’North and South Poles’ WHERE region_id = 5;
You want to back out transaction T2. Which option would you use?
A.
It is possible, but transaction T3 also backs out.
B.
It is possible with the NOCASCADE_FORCE option.
C.
It is possible with the NONCONFLICT_ONLY option.
D.
It is not possible because it has conflicts with transaction T3.