One comment on “ETL / Data Warehouse Testing – Tips, Techniques, Process and Challenges

  1. Nice article. One of the other issues with testing ETL and data from source(s) to target is the sheer volume of data. Most companies test less than 10% of their data after transformation. We tried every way to rectify this with conventional tools from HP and IBM. it didn’t work. So we built a tool to automate the launch and compare of query pairs. Check it out. http://www.QuerySurge.com.

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