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When two or more columns are combined to be used to uniquely identify each row in the table, it is known as –

11. When two or more columns are combined to be used to uniquely identify each row in the table, it is known as -

1. Primary Key
2. Unique Key
3. Composite Key
4. Foreign Key

Answer: C) Composite Key

Explanation:

When two or more columns are combined to be used to uniquely identify each row in the table, it is known as Composite Key.