Data Validation

Question 1

What is data validation

Answer 1

Data validation is the process of ensuring that data entered into a system meets certain criteria for accuracy, completeness, and consistency

Question 2

Range check

Answer 2

Ensures that values fall within a specified range

Question 3

Type check

Answer 3

Ensures that data is of the correct type, such as alphabetic or numeric

Question 4

Presence check

Answer 4

Prevents essential fields from being blank

Question 5

Uniqueness check

Answer 5

Ensures that there is no duplication or overlap

Question 6

Check digit

Answer 6

Ensures that code numbers that are originally produced by a computer are re-entered into another computer correctly.

Question 7

Length check

Answer 7

Confirms that a data entry has the correct length.

Question 8

Consistency check

Answer 8

Filters out bad data to ensure high-quality data for proper analysis.

Question 9

difference between data validation and data verification

Answer 9

data validation ensures that data meets predefined criteria for quality and consistency, while data verification confirms the accuracy and correctness of the entered data through various methods.