ETL Data Warehouse Interview Questions [64 Questions]

  1. Extract / Transform ProcessDescribe the stages of extract / transform process, including what should happen at each stage and in what order?
  2. Data Cleansing PhaseWhat are some typical considerations during the data cleansing phase
  3. Data Extraction ToolsWhat are the different tools available for Data Extraction
  4. Clean Data before LoadingWhy is it necessary to clean data before loading it into the Warehouse
  5. Cognos vs Informaticacan anybody tell me that what are the processes used by cognos and Informatica for ETL Extraction, Scrubbing and Fusion. If you have any detailed report then please send me on
    my mail ID...
    nm_105@yahoo.co.in

    thanks in Advance...
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