Correct Answer: - Sub Query also termed as Nested Query or Inner Query is used to get data from multiple tables - A sub query is added in the where clause of the main query There can be two types of subqueries: a) Correlated sub query : - It can reference column in a table listed in the from list of the outer query but is not as independent as a query b) Non-Correlated sub query : - Results of this sub query are submitted to the main query or parent query - It is independent like a query
