ETL Testing Explained: Why It’s Critical for Data Quality
Think of ETL testing like being a quality inspector at a factory, but instead of checking products, you're checking data. ETL stands for Extract, Transform, Load – basically the three steps data goes through when moving from one place to another. Imagine you're moving houses. You'd extract items from your old home, transform them (maybe pack them differently), and load them into your new place. ETL testing makes sure nothing gets lost or broken during this "data move."
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