Can you explain ETL transformation?
💡 Model Answer
ETL stands for Extract, Transform, Load. It is a data integration process that moves data from source systems into a target data store. Extraction pulls raw data from databases, APIs, or files. Transformation cleans, normalizes, aggregates, and enriches the data, often using tools like SQL, Python, or Spark. Loading writes the transformed data into a destination such as a data warehouse or lake. ETL ensures that downstream analytics and reporting systems receive consistent, high-quality data.
This answer was generated by AI for study purposes. Use it as a starting point — personalize it with your own experience.
🎤 Get questions like this answered in real-time
Assisting AI listens to your interview, captures questions live, and gives you instant AI-powered answers — invisible to screen sharing.
Get Assisting AI — Starts at ₹500