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 would be dropped provided it does not contain any data.
B.
The FIRST_NAME column would be dropped provided at least one or more columns
remain in the table.
C.
The FIRST_NAME column can be rolled back provided the SET UNUSED option is
added to the above SQL statement.
D.
The FIRST_NAME column can be dropped even if it is part of a composite
PRIMARY KEY provided the CASCADE option is used.