etl testing interview questions and answers Interview Questions and Answers

  • ETL Testing Interview Questions and answers

    by On July 17, 2014

    Question.1   What is a Data Warehouse? Answer:    A Data Warehouse is a collection of data marts representing historical data from different operational data source (OLTP). The data from these OLTP are structured and optimized for querying and data analysis in a Data Warehouse. Question.2   What is a Data mart? Answer:  ..

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