Relational Database: Union Compatibility Question


Hi,

According to one reference, the union compatibility is defined as
such:
(1)the two relations have the same degree n (number of attributes) ,
and (2) domain (Ai)= domain (Bi) for 1= thank you <:>

Comments

  • : According to one reference, the union compatibility is defined as
    : such:
    : (1)the two relations have the same degree n (number of attributes) ,
    : and (2) domain (Ai)= domain (Bi) for 1= 0
    no rows returned
    [/code]

Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Categories

In this Discussion