The project operator in relation algebra
(i)is used for eliminating duplicate rows automatically from the output.
(ii)is used to filter columns
(iii)is a unary operator
(iv)has degree of output relation same as input relation
Which of the above is FALSE?
1
(i) and (iii)
2
(ii) and (iv)
3
(i) and (ii)
4
(iv) only
5
Question Not Attempted