Question : What is data validation?
Option 1: checking or verifying any data before it is allowed into a computer system
Option 2: checking or verifying any data after it is allowed into a computer system
Option 3: checking or verifying any data before it is not allowed into a computer system
Option 4: checking or verifying any data after it is not allowed into a computer system
Correct Answer: checking or verifying any data before it is allowed into a computer system
Solution : Data validation means checking or verifying any data before it is allowed into a computer system. Hence, the correct option is 1.