- Data normalization means structuring data into organized, non-duplicated tables.
- We separated repeating attributes into dimension tables.
- In my project, customer details were moved out from transaction table.
- Order table then stored only customer ID reference.
- This reduced redundancy and data inconsistencies.
- It improved model performance and storage efficiency.
- Relationships became clearer for reporting and analysis.
- Changes in customer data were maintained in one place.
- Normalization also supported easier maintenance and scalability.
- So it creates a clean and structured data model.
What is data normalization from a transformation perspective?
Updated on February 9, 2026
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