Designing of data entry – problems with errors

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  • Created by: Rob
  • Created on: 08-05-13 11:40

Designing of data entry – problems with errors

Problems with inaccurate data

Errors in data can cause problems:

·         Incorrect decisions made resulting in loss of money

·         Goods being sent to the wrong address

·         Having to spend time sorting our mistakes

·         Loss of trust

·         Prosecution under the Data Protection Act 1998

Validity and correctness of data:

For data to be valid it has to obey certain rules. E.g. input masks, postcode has to be LL00/0LL. Incorrect input would be rejected.


Two ways to reduce errors, Verification and validation


Verification: checking data which is being entered matched the source. Two methods of verification:

Proof reading – involves the user to read the data they have entered against the source to ensure it is correct.


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