Difference between Subquery and Correlated Subquery

Question

Is the following piece of SQL Query a normal query or a Correlated Subquery ??

SELECT UserID,
       FirstName,
       LastName,
       DOB,
       GFName,
          


        

Answer 1

when it comes to subquery and co-related query both have inner query and outer query the only difference is in subquery the inner query doesn't depend on outer query, whereas in co-related inner query depends on outer.