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Types and Components of Computer Systems

Jess Peason

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Validation

Description

GSCE ICT (Topic one: Data) Mind Map on Validation, created by s.guyomard on 08/09/2013.

Mind Map by s.guyomard, updated more than 1 year ago

	Created by s.guyomard almost 12 years ago

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Resource summary

Validation

Performed by a computer program
1. Checks if data is reasonable and allowable
2. Uses rules
3. Rejects certain data
4. Cannot eliminate all errors
Validation checks
1. Range checks
2. Format checks
3. Presence checks
4. checks digits
Validation checks for groups of documents
1. Batch totals
2. Hash totals

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