IDG Contributor Network: Visual ETL considered harmful (to your skills)

ETL (Extract Transform and Load) is the common name for the processes through which data gets pulled from multiple repositories, combined, filtered and aggregated in various ways, and then "loaded" where it is intended to be used for a specific purpose, like a target data mart. Many ETL tools are predicated on the bedrock belief that visual representations of the transformations are easier to create, manage, and understand than corresponding textual descriptions.

The idea goes that if...

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