Thursday, 6 March 2014

Staging Area in Data warehouse

What is a staging area? Why we need it? What is the purpose of a staging area? 

Staging area is place where we the hold temporary tables on data warehouse server.
Staging tables are connected to work area or fact tables.
We basically need staging area to hold the data for cleansing(removing spaces/nulls or to provide expected date format etc.)

and merging purpose, before loading the data into data warehouse/data mart.

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