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What does the Top Down Approach says? - ETL
ETL (extract, transform, and load) Testing Interview Questions
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77. What does the Top Down Approach says? - ETL
The Top Down Approach is coined by Bill Immon. According to his approach he says “First we need to implement the Enterprisedata warehouse by extracting the data from individual departments and from the Enterprise data warehouse develop subject oriented databases called as “Data Marts”.
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