Difference between Joins, Nested Subquery and Correlated Subquery | Most Imp Concept of SQL | DBMS

Introduction to Joins Link: https://www.youtube.com/watch?v=zYH-e6tUYbw Introduction to subqueries:https://www.youtube.com/watch?v=_yog7h4BokQ&t=3s Correlated Subquery:https://www.youtube.com/watch?v=0d419Vo2Po4&t=76s #joinvsSubqueryvsCorrelatedSubquery#SQL#DBMS ... https://www.youtube.com/watch?v=bonJEipf3VU