In SQL, which command is used to add a column/integrity constraint to

1.	In SQL, which command is used to add a column/integrity constraint to a table
A.	ADD COLUMN
B.	INSERT COLUMN
C.	MODIFY TABLE
D.	ALTER TABLE
E.	None of the above
Answer» E. None of the above

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In SQL, which command is used to add a column/integrity constraint to a table

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