View the Exhibit and examine the structure of the EMP table which is not partitioned and not
an index-organized table. Evaluate the following SQL statement: ALTER TABLE emp
DROP COLUMN first_name; Which two statements are true regarding the above
command? (Choose two.)
A.
The FIRST_NAME column can be rolled back provided the SET UNUSED option is
added to the above SQL statement.
B.
The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY
KEY provided the CASCADE option is used.
C.
The FIRST_NAME column would be dropped provided it does not contain any data.
D.
The FIRST_NAME column would be dropped provided at least one or more columns
remain in the table.