- Validation of extracted data means verifying the data is correct and usable after loading.
- We checked column data types like date, integer, and currency formats.
- Mandatory fields such as Customer ID and Amount were validated for nulls.
- Duplicate detection was done using primary key combinations.
- Business rules were applied, for example order date cannot exceed today.
- Outlier values like negative sales amounts were flagged.
- We cross-verified sample records with the source system screens.
- Invalid rows were separated into an error table for review.
- This avoided wrong KPIs appearing in dashboards.
- So validation ensures accuracy and business trust in the data.
What is validation of extracted data?
Updated on February 9, 2026
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