In SQL, how can you modify an existing table to add a foreign key constraint referencing another table? - Study24x7
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4 followers study24x7 03 Oct 2024 12:16 PM study24x7 study24x7

In SQL, how can you modify an existing table to add a foreign key constraint referencing another table?

A

ALTER TABLE table_name ADD CONSTRAINT fk_name FOREIGN KEY (column1) REFERENCES other_table(column2)

B

ALTER TABLE table_name MODIFY COLUMN column_name FOREIGN KEY REFERENCES other_table(column_name)

C

ALTER TABLE table_name ADD FOREIGN KEY (column_name) REFERENCES other_table

D

USE table_name ADD FOREIGN KEY REFERENCES other_table

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