True and False for Design of Database Systems

Question 1 2 points Save Answer It is possible to store null value directly in MySQL. True O False Question 2 2 points Save Answer A SQL Select Statement may not have a WHERE clause. True False A Moving to another question will save this response. >> Question 3 2 points Save Answer R has 4 rows and S has 5 rows. It is possible for R x S to have 19 rows. O True O False A Moving to another question will save this response. >> Question 4 The query design wizard in Microsoft's Access is based on Relational Calculus. O True O False Question 5 Relations and have four and five tuples respectively. It is not possible that R x S to have o tuple. True O False Question 6 R has 5 rows and Shas 6 rows. It is possible for Rx Sto 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. True False Question 8 When mapping an ER model to relational schema, a set of entities usually becomes a relation instance. True False Question 9 In ER diagrams, it is possible for an attribute of an entity to be multi-valued. True False Question 10 Relational Algebra cannot handle recursive types of queries. True False