Monthly Archives: September 2009

Difference between Subquery, Nested Subquery and Correlated Subquery

By | September 29, 2009

Difference between Subquery, Nested Subquery and Correlated Subquery Query Query can be defined as a way to inquire the data from the database. It is used to extract the data from one table or multiple tables depending upon the user needs. Suppose we have a two tables Student and courses whose structure is given below:-… Read More »