JOINS and SET Operations — Question 1

The Cartesian product of two tables is a relation that contains all possible concatenations of all rows of both the participating relations (tables).

The Cartesian product and joins are related because a Cartesian product, also known as a cross join, is a very basic type of join without any condition. It pairs every row from one table with every row from another, creating a complete combination of all rows. Meanwhile, a join is a query that combines rows from two or more tables based on a specified condition.