1. Verification & Validation
DATA . . .
Verification
&
Validation

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

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
Ms. Ngui Form 1 Term 2
1/2/2013

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

5. Summarize 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
Ms. Ngui Form 1 Term 2
1/2/2013