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ETL concepts interview questions

Category has interview querstions on basic etl concepts, including questions on basic task of extraction, transformation & loading. Do check back for latest additions.

Extract, transform and load (ETL) is a process in database usage and especially in data warehousing that involves:

  • Extracting data from outside sources
  • Transforming it to fit operational needs (which can include quality levels)
  • Loading it into the end target (database or data warehouse)
ETL - Extract Transform & Load

 

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8 Interview Questions on ETL concepts - Extraction, Transformation, Loading