Data warehousing concepts (FAQ’s)
1) What is Data warehouse?
Data warehouse is relational database used for query analysis and reporting. By definition data warehouse is Subject-oriented, Integrated, Non-volatile, Time variant.
Subject oriented : Data warehouse is maintained particular subject.like HR,Sales,Loan ,etc.
Integrated : Data collected from multiple sources integrated into a
user readable unique format.
Non volatile : Maintain Historical date.
Time variant : data display the weekly, monthly, yearly.
1) What is Data warehouse?
Data warehouse is relational database used for query analysis and reporting. By definition data warehouse is Subject-oriented, Integrated, Non-volatile, Time variant.
Subject oriented : Data warehouse is maintained particular subject.like HR,Sales,Loan ,etc.
Integrated : Data collected from multiple sources integrated into a
user readable unique format.
Non volatile : Maintain Historical date.
Time variant : data display the weekly, monthly, yearly.
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