Natural join if no common attributes
cartesian-product, cross-join, natural-join, relational-algebra, relational-database
Solution
If there are no attributes in common between two relations and you perform a `natural join`, it will return the `cartesian product` of the two relations.
Problem
What will natural join return in relational algebra if tables don't have attributes with same names? Will it be null or the same as cross join (cross product) (Cartesian product)?