Validation and Verification
- Created by: abby84330
- Created on: 09-05-18 08:38
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- validation and verification
- transmission
- data is sent from one computer medium to another
- Transcription
- Data is copied from one medium to another
- Transcription errors
- Omission
- Leaving data out
- Transpositions
- Data that might be reversed (transposed)
- Spelling mistakes
- errors when typing
- Omission
- transmission
- Verification methods
- performed to ensure that data entered matches the original source
- Visual check
- comparing source data to transcribed data by eye
- Double keying
- Dat is entered twice and the computer compares the two versions
- Parity Check
- made on transmitted data ; Data is transmitted in binary numbers
- Validation methods
- Batch total
- Has meaning
- Format Check
- Checks that data is laid out in an agreed way
- Presence Check
- Ensures that data is present
- Range Check
- Check if numerical data is within a sensible range
- Hash total
- Has no meaning
- Batch total
- validation and verification
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