Question 3 2 points Save Answer Rhas 4 rows and Shas 5 rows. It is possible for R x S to have 19 rows. O True O False Moving to another question will save this response. >> Question 4 The query design wizard in Microsoft's Access is based on Relational Calculus. True O False Question 5 Relations and have four and five tuples respectively. It is not possible that RX Sto have 0 tuple. O True O False Question 6 Rhas 5 rows and S has 6 rows. It is possible for R x S to have 21 rows. O True O False Question 7 In MySQL, it is possible to create a table by using the definition of another table. O True O False Question 8 When mapping an ER model to relational schema, a set of entities usually becomes a relation instance. O True O False