Exam (elaborations)
IGCSE ICT Unit 15 Proofing.
- Course
- Institution
IGCSE ICT Unit 15 Proofing.
[Show more]
Seller
Follow
lydiaomutho
Content preview
IGCSE ICT Unit 15 ProofingWhat is validation? (3) - correct answer-Checking that data entered is reasonable and to see
if it satisfies certain criteria and falls within accepted boundaries.
Presence check - correct answer-Is data actually present in a field, or has it been missed
out?
Range Check - correct answer-Is the data value within a set range?
(E.g. an exam mark should be between 0% and 100%, a month should be between 1 and
12)
Length Check - correct answer-Is an item of text too short or too long?
Type Check - correct answer-Is the data the correct type?
(E.g. the letter 'A' should not be allowed in a numeric field)
Format Check - correct answer-Is the data in the correct format?
(E.g. a date of birth should be entered as dd/mm/yyyy)
What is verification? - correct answer-A way of preventing errors when data is copied from
one medium to another.
What can verification do? - correct answer-Reduce the errors made when data is entered
into the computer.
Two common ways of verification checks - correct answer-Visual checking and double data
entry
Explanation of visual verification (checking) - correct answer-Compare the original paper
documents with the data entered into the computer
Explanation of double data entry (4 points) - correct answer-Data is entered into a system
twice (often by two different people) and compared by the computer and any differences in
the data is flagged as an error and can be correct by the user.
Why are validation and verification needed? - correct answer-To reduce the number of errors
in data entry
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lydiaomutho. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now