Given two sets {2, 3, 4} and {3, 4, 5}, if I wanted to perform a union
upon them, I would expect to get the result {2, 3, 4, 5} and not an
error message stating the 3 and 4 existed in both. Is this analagous to
an insert? If this is the case, with an insert viewed as the union of
the relation's existing set of elements with specified insert set
(which just contains a single element), then from a purely theoretical
standpoint an error message does seem suprising.
Received on Mon Oct 17 2005 - 18:28:22 CDT
