Chapter 8: Core Techniques and Principles

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Validation Techniques

Existence checking: Veryfing that the data has been entered

Type Checking: Veryfing that the input data is not incorrect

Range checking: Checking that a entered value is acceptable

Characteristics of data

Accuracy: How accurate is the data

Timely: Is the data time acurate

Reasonable: Is the data used in the right context

Authentic: Is the data source trusted

Correct: Is the data correct

Common File Formats

CSV: Text file where items are sepperated by a comma

XML: