Question

If table A has 10 rows and table B has 5 rows, how many rows will be returned if you perform a cartesian join on those two tables?

a) 50
b) 5
c) 10
d) 15

Answer 1

Performing a cartesian join on two tables where one has 10 rows and the other has 5 rows will result in 50 rows, because all possible combinations of rows from both tables are included.

Step-by-step explanation:

If table A has 10 rows and table B has 5 rows, performing a cartesian join on these tables will return a total of 50 rows. A cartesian join, also known as a cross join, combines all rows from table A with all rows from table B. This means that for each row in table A, there will be 5 corresponding rows from table B in the result. Therefore, you multiply the number of rows in table A by the number of rows in table B to get the total number of rows in the result (10 rows * 5 rows = 50 rows).