Question
Informatics Practices Question on Operators
Union, intersection and minus can be applied between two tables if :
A
They have same cardinality.
B
They have same degree with any type of data in each table.
C
They have same same degree and cardinality
D
They have same degree and corresponding attributes have same domain.
Answer
They have same degree and corresponding attributes have same domain.
Explanation
Solution
The correct option is(D): They have same degree and corresponding attributes have same domain.