A(n)_____ is a data validation rule that should be applied to mandatory data items.
A) sequence check
B) range check
C) asynchronic check
D) existence check

Question

Quizplus · Accepted Answer

An existence check is a data validation rule that verifies whether mandatory data items have been provided or not. It ensures that the required data items are entered and not left blank. A sequence check is used to verify the order of data entry, a range check compares a data item against a set of predetermined values, and an asynchronous check ensures that data is being entered within a specified time frame.

A(n)_____ Is a Data Validation Rule That Should Be Applied