Testing the Flow: ETL Quality Assurance
Ensuring Data Integrity: A Deep Dive into ETL Testing Strategies In today's data-driven world, the quality and accuracy of information are paramount. Extract, Transform, Load (ETL) processes, responsible for moving and refining vast datasets, are crucial to this mission. But how do we ensure these complex systems function flawlessly? Enter the realm of ETL testing – a multi-faceted approach designed to safeguard data integrity throughout its journey. Unit Testing: Building Blocks of Confidence Think of unit testing as examining individual components of your ETL pipeline under a microscope. Each step, from data extraction to transformation logic, is isolated and tested independently. This granular approach allows you to identify and rectify issues early on, preventing them from cascading into larger problems....