Sunday, 19 June 2016

What is data warehouse

What is  data warehouse




Data warehouse is a relational database that is designed for query and analysis


Data warehousing is a technology that aggregates structured data from one or more sources so that it can be compared and analyzed for greater busines

the purpose of a warehouse is to enable you to analyze what has occurred.

 data warehouse on a regular basis by the ETL process  is updated

  thousands or millions of rows can be scanned by a typical data warehouse query
 
 
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