Big data transformation and integration can happen outside the database in an extract, transform, load (ETL) operation, or inside the database in an ELT operation: http://www.iri.com/blog/data-transformation2/etl-vs-elt-we-posit-you-judge/ One example of an ELT operation would be Informatica’s Pushdown Optimization option to allow users to perform transformations in a relational database like Oracle or Teradata. According to Informatica, this [...]
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