Consider the following scenario:  You have a directory, data, under the disk group tdgroup  A. You want to create an alias for one of the data files and you execute the following command: ALTER DISKGROUP tdgroupA  ADD ALIAS ’+tdgroupA/data/datafile.dbf’  FOR ’+tdgroupA. 231.45678’;  Which task would be accomplished by the command?()
A:A
B:B
C:C
D:D
E:E
出自:Oracle认证