Computer Science · Oct / Nov 2022 · Paper 22 · Question 3
0478
As printed in the paper
The question as text
Describe the use of verification on input of data when entering a list of items in stock into a database. Explain why verification is necessary. [3]
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Show the answer and mark scheme
One mark per mark point, max three
MP1
verification is used to make sure the items in stock do not change from the original when they are input // verification is used to make sure the items in stock do not change from what was intended to be input // verification is used to make sure the items are accurately copied
MP2
enter each item in stock twice / double entry // visual check
MP3
matching description of the type of check stated in MP2
Example answers
Double entry [1] enter data twice and only accept identical values [1]
Visual check [1] look at the data that has been entered and confirm it matches [1]
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