16.
The SQL built in function _______ totals values in numeric columns.
17.
The SQL built-in function _______calculates the average of values in the numeric columns.
18.
The SQL built-in function _______ obtains largest value in numeric column.
19.
The SQL built-in function _______ obtains smallest value in the numeric column.
20.
The SQL built-in function _______ computes the number of rows in a table.
