The columns of a relation are known as ________.

An argument type followed by a(n) in a method’s parameter list indicates that the method receives a variable number of arguments of that particular type.

a. square brackets ([]) b. ellipsis (...) c. varargs keyword d. All of the above are acceptable to indicate a variable number of arguments.

To insert three columns between columns D and E you would

A. Select column E B. Select columns D, E and F C. Select columns E, F and G D. Select column D