FundamentalsBeginner
What is ETL?
Answer: ETL means extract, transform and load: data is collected from sources, transformed into a useful structure and loaded into a destination system.
- Extract
- Transform
- Load
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Interview Preparation
Scalable data ingestion, transformation, storage, orchestration and quality.
Practice role-specific questions with concise answers and key points.
Answer: ETL means extract, transform and load: data is collected from sources, transformed into a useful structure and loaded into a destination system.
Answer: Use schema validation, idempotent processing, checkpoints, retries, dead-letter handling, data-quality checks, lineage and monitoring so failures are detectable and recoverable.