Why is the union operation not expressed in terms of the intersection and difference operations?

A

altair_u2015-10-30 13:33:46

Database

altair_u, 2015-10-30 13:33:46

Please help with the question
Option 1 because it is commutative
Option 2 because the intersection operation itself is redundant
Option 3 because the power of its result is greater than the power of each of the operands, if one of them is not an empty set

Reply

Answer the question

In order to leave comments, you need to log in

0 answer(s)

Similar questions

L

Lenar Mutigullin2016-10-16 23:42:34

What technology stack to choose for a cross-platform mobile application and website? 4Reply

N

Nikolai Gromov2016-10-18 12:18:04

Mysql + php how to get the value of the third column by comparing the other two in two different tables? 1Reply

V