The ALTER TABLE statement is used to modify an existing table.
A. Include columns
B. Include restrictions
C. Columns should be removed.
D. All of the above
Answer:D
The ALTER TABLE statement is used to modify an existing table.
A. Include columns B. Include restrictions C. Columns should be removed. D. All of the above
Explanation: The ALTER TABLE statement is used to add, delete, or modify columns and constraints in an existing table, such as UNIQUE KEY, FOREIGN, and NOT NULL.