An outer join is necessary when you need rows returned from either table that do not have a matching record in the other table.
O LEFT
O FULL
O RIGHT
O INTERSECT
Question 2
1 pts
In a join, column names need to be qualified only
O in inner joins
O in outer joins
O when the code is confusing
O when the same column names exist in both tables
Question 3
1 pts
The product of two tables is also called the Cartesian product.
O Cartesian
O aggregate
O Cathode
O exponential