Data Lakes and Accuracy

Silicon Angle discusses a side effect of the concept of data lakes.  Governance is easier to apply.

" ..... Progressing into the “total customer experience,” one of EMC’s key initiatives is the “Business Data Lake.” The idea is to have data scientists pull from a single, organized source as opposed to various chaotic sources.

Having multiple data warehouses, for instance, allows for “ponds,” which are small arms of data stored aside from the parent data, according to Barbara Latulippe, chief data governance officer at EMC, and Anand Singh, enterprise data management architect at EMC. Latulippe and Singh joined John Furrier of theCUBE, SiliconANGLE Media’s production team, at Informatica World 2015.
The data warehouses or “data lake” are of benefit to data scientists and analysts because they focus on making sense of the data in preparation for analytics, including very specific demographic details, such as age, gender, what kind of tendencies, etc, according to Latulippe and Singh.  ,,, "