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Validation and Verification Explained
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=NmwtF0fAUfI
Validation is the automatic computer check of data at the point of entry with the aim of trying to ensure that the data entered is realistic and sensible. • Validation is important because trying to resolve issues with garbage data after the point of entry is difficult. Garbage data may also cause your programs to crash. • Validation methods include: • Range checks • Presence checks • Length checks • Check digits • Type checks • Verification is a method of trying to ensure that data is correctly copied from one medium to another. • Verification methods include: • Double entry • Visual checks • Chapters • 0:00 Introduction • 0:12 What is validation? • 0:40 Why use validation? • 3:43 Validation does not guarantee accuracy • 6:32 Methods of validation • 8:46 What is verification? • 9:40 Methods of verification • 12:27 Conclusion • Downloadable resources: • https://www.computerscience.gcse.guru... • Free revision theory: • https://www.computerscience.gcse.guru • #ComputerScience #validation #verification
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