CUET and UG exam CUET UG 2025 Mock Test Series Data Analytics SQL

Which of the following is correct syntax for inserting foreign key constraint in a relation?

1
ALTER TABLE table_name ADD FOREIGN KEY(attribute name) REFERENCES referenced_table_name(attribute name)
2
ADD TABLE table_name ADD FOREIGN KEY(attribute name) REFERENCES referenced_table_name(attribute name)
3
ALTER TABLE table_name REFERENCES referenced_table_ name(attribute name) ADD FOREIGN KEY (attribute name)
4
MODIFY TABLE table_name ADD FOREIGN KEY(attribute name) REFERENCES referenced_table_name(attribute name)
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