Question

State True or False:

If table A has 6 rows and 3 columns, and table B has 5 rows and 2 columns, the Cartesian product of A and B will have 30 rows and 5 columns.

Answer 1

This statement is true.

Explanation:
In a Cartesian product of two tables A and B:

• The degree (number of columns) of the resulting table is the sum of the degrees of A and B.
• The cardinality (number of rows) of the resulting table is the product of the cardinalities of A and B.

Here,

• Degree = 3 + 2 = 5
• Cardinality = 6 × 5 = 30

Hence, the statement is correct.