write true or false
1)It is possible to store null value directly in MySQL.
2)In Relational Algebra, the UNION operator is a unaryoperator.
3)n SQL, it is possible to insert multiple rows into a tableusing a single INSERT statement.
4)R has 5 rows and S has 6 rows. It is possible for R |x| S tohave 30 rows.
5)R has 5 rows and S has 6 rows. It is possible for R |x| S tohave 21 rows.
6)Relations R and S have four and five tuples respectively. Itis not possible that R |x| S to have 0 tuple.
7)R has 4 rows and S has 5 rows. It is possible for R |x| S tohave 19 rows.
8)The query design wizard in Microsoft’s Access is based onRelational Calculus.
