Question

Consider the following statements:

I. Cross product and Natural Join, both are commutative and associative.

II. Consider the expression, a Natural Join. If a and b have disjoint headings then this expression is equivalent to a PRODUCT b. If a and b have same headings then this expression is equivalent to a INTERSECTION b.

Which of the above statements is/are true?

Answer 1

Option (c)

Both statements are true.