Data Processing Data Validation and Quality

Question 1

Which data validation technique checks that a value falls within an acceptable range?

Accepted Answer

Range check

Answer

A range check verifies that a data value falls within a specified minimum and maximum boundary.

Question 2

What is data integrity in the context of data processing?

Accepted Answer

Accuracy and consistency of data over its lifecycle

Answer

Data integrity refers to maintaining and assuring the accuracy, consistency, and reliability of data throughout its entire lifecycle.

Question 3

Which type of check verifies that required fields are not left empty?

Accepted Answer

Presence check

Answer

A presence check (also called a completeness check) ensures that mandatory fields contain a value before processing.

Question 4

What does a format check validate in data processing?

Accepted Answer

That data matches an expected pattern or structure

Answer

A format check ensures that data conforms to a predefined pattern, such as a phone number or date format.

Question 5

Which term describes data that is incorrect, incomplete, or inconsistent?

Accepted Answer

Dirty data

Answer

Dirty data refers to any data that contains errors, duplicates, missing values, or inconsistencies that reduce its quality and reliability.

Data Processing Practice Test