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Verification & Validation DATA.... Objectives Identify types of data verification Identify types of data validation Explain the difference between data.

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Presentation on theme: "Verification & Validation DATA.... Objectives Identify types of data verification Identify types of data validation Explain the difference between data."— Presentation transcript:

1 Verification & Validation DATA...

2 Objectives Identify types of data verification Identify types of data validation Explain the difference between data verification and validation Keywords Validation Verification Data capture 1/2/2013 2 Ms. Ngui Form 1Term 2

3 Data Verification Checking of data to ensure that it was accurately transcribed or copied from the original storage medium e.g. flash drive > > computer Two main : Visual checks Dual input 1/2/2013 3 Ms. Ngui Form 1Term 2

4 Data Validation Checking of data for errors before actual processing. Used to determine data inaccuracies, incompleteness and unreasonableness Some validation methods: Format checkParity check Length checkCheck digit Presence checkData ~ type check Range check 1/2/2013 4 Ms. Ngui Form 1Term 2

5 Verification Validation Checks to ensure data was accurately copied from the original storage medium into the computer Has 2 verification methods Checks data for errors before actual processing Has > 7 methods of validation Summarize 1/2/2013 5 Ms. Ngui Form 1Term 2


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