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      PNC Financial Services Group

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      Colloquio per Data Analyst II presso PNC Financial Services Group

      Domanda di colloquio di PNC Financial Services Group

      Colloquio per Data Analyst II

      Asked about SQL and ETL process

      Risposta di colloquio

      Anonimo

      6 set 2015

      SQL is a structured language developed initially at IBM for managing and extracting data from relational databases. ETL is extract,transformation, and load. ETL is a process of moving data from a data source and applying needed transformations, and then applying the answer to the target source with the applied transformations.

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