Computer Science for IGCSE & O level - Algorithm Design And Problem Solving (Section 4 - No. 25)
Which method can prevent the incorrect values in a double entry data?
A format check
A type check
Comparing the entries made by different operators
The system compares the data entered by different operators
解释
The double entry method requires data to be entered twice. The computer compares the two entries, and if they are different, then an error message will appear.