A semijoin is which of the following?
A
Only the joining attributes are sent from one site to another and then all of the rows are returned.
B
All of the attributes are sent from one site to another and then only the required rows are returned.
C
Only the joining attributes are sent from one site to another and then only the required rows are returned.
D
All of the attributes are sent from one site to another and then only the required rows are returned.
Correct Answer: Only the joining attributes are sent from one site to another and then only the required rows are returned.