juniorData Processing
What is data transformation?
Updated May 15, 2026
Short answer
Data transformation converts data into a usable format.
Deep explanation
It includes normalization, aggregation, filtering, and encoding to prepare data for analytics or machine learning.
Real-world example
Converting raw logs into structured analytics tables.
Common mistakes
- Over-transforming and losing original meaning.
Follow-up questions
- What are common transformation types?
- Is transformation always required?