Which two statements are true regarding SQL statements …

Examine the description of the EMP_DETAILS table given below:
Which two statements are true regarding SQL statements that can be executed on the
EMP_DETAIL table? (Choose two.)
Exhibit:

A.
An EMP_IMAGE column can be included in the GROUP BY clause.

B.
An EMP_IMAGE column cannot be included in the ORDER BY clause.

C.
You cannot add a new column to the table with LONG as the data type.

D.
You can alter the table to include the NOT NULL constraint on the EMP_IMAGE column.

Explanation:
LONG Character data in the database character set, up to 2GB. All the functionality of LONG (and
more) is provided by CLOB; LONGs should not be used in a modern database, and if your database
has any columns of this type they should be converted to CLOB. There can only be one LONG
column in a table.
Guidelines
A LONG column is not copied when a table is created using a subquery. A LONG column cannot

be included in a GROUP BY or an ORDER BY clause.
Only one LONG column can be used per table.
No constraints can be defined on a LONG column.
You might want to use a CLOB column rather than a LONG column.