MYTUTOR SUBJECT ANSWERS

2129 views

What is data validation and data verification?

Data Validation
Data validation is the process of comparing data with a set of rules to find out if data is reasonable. 

There are many types of data validation such as:
-Format check: Checks data is in the right format, e.g. date in the format dd/mm/yyyy
-Presence check: Checks that data has been entered into a field
-Range check: Checks that a value falls within the specified range, e.g. IB grades can only range between 0 and 7.
-Type check: Ensures the correct data type has been entered, e.g. age should be a number.

Data Verification
Data verification is the process of checking that the data entered exactly matches the original source to find out if data is accurate.

Data verification methods include:
-Double entry - entering data twice
-Proofreading data - someone checks the data entered against the original document
-Echo - system repeats the data being entered

Carlota O. GCSE Business Studies tutor, IB Computing tutor, IB Maths ...

1 year ago

Answered by Carlota, an IB Computing tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

6 SUBJECT SPECIALISTS

£36 /hr

Dario P.

Degree: Computer Science (Masters) - Manchester University

Subjects offered:Computing, Maths+ 3 more

Computing
Maths
Italian
ICT
-Personal Statements-

“I am Computer Science Russell Group student with experience in research and industry and strong mathematical skills, I enjoy tutoring and helping students consolidate their knowledge.”

£20 /hr

Carlota O.

Degree: Computer Science (Bachelors) - University College London University

Subjects offered:Computing, Physics+ 2 more

Computing
Physics
Maths
Business Studies

“About meI am a Computer Science student at University College London. I have a passion for math and sciences and I look forward to help out with any of these areas.In high school, I completed the International Baccalaureate programm...”

£26 /hr

Ben J.

Degree: Physics and Computer Science (Natural Sciences) (Masters) - Durham University

Subjects offered:Computing, Science+ 6 more

Computing
Science
Physics
Maths
Further Mathematics
Chemistry
Biology
-Personal Statements-

“About Me: I'm a Physics and Computer Science student at Durham University, which sounds boring but it's actually really fun.I've got a great knack for making boring things more exciting, which is a good job given my degree title!  I'...”

About the author

£20 /hr

Carlota O.

Degree: Computer Science (Bachelors) - University College London University

Subjects offered:Computing, Physics+ 2 more

Computing
Physics
Maths
Business Studies

“About meI am a Computer Science student at University College London. I have a passion for math and sciences and I look forward to help out with any of these areas.In high school, I completed the International Baccalaureate programm...”

You may also like...

Posts by Carlota

What are the advantages and disadvantages of a sole trader business model?

What is data validation and data verification?

What is the difference between thermal energy and internal energy?

Why are some nuclei stable while others are unstable?

Other IB Computing questions

Define the terms CU and ALU and briefly explain their roles in the CPU.

What is encapsulation?

Name several sort algorithms of an array, their working principles and their efficency.

View IB Computing tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok