Friday, 26 October 2012

What are the benefits of data warehousing? | Data Warehousing Interview Questions

 Benefits of data warehousing:
=>  Data warehouses are designed to perform well with aggregate queries running on large amounts of data.
=>  The structure of data warehouses is easier for end users to navigate, understand and query against unlike the relational databases primarily designed to handle lots of transactions.
=>  Data warehouses enable queries that cut across different segments of a company's operation. E.g. production data could be compared against inventory data even if they were originally stored in different databases with different structures.
=>  Queries that would be complex in very normalized databases could be easier to build and maintain in data warehouses, decreasing the workload on transaction systems.
=>  Data warehousing is an efficient way to manage and report on data that is from a variety of sources, non uniform and scattered throughout a company.
=>  Data warehousing is an efficient way to manage demand for lots of information from lots of users.
=>  Data warehousing provides the capability to analyze large amounts of historical data for nuggets of wisdom that can provide an organization with competitive advantage.

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