WHAT IS DATAWAREHOUSING?

Kamlakar Singh

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Posted by  Kamlakar Singh
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  1. Kamlakar Singh

    Post:80

    Points:400
    What is DataWarehousing?

    1.    Subject-oriented, meaning that the data in the database is organized so that all the data elements relating to the same real-world event or object are linked together;

    2.    Time-variant, meaning that the changes to the data in the database are tracked and recorded so that reports can be produced showing changes over time;

    3.    Non-volatile, meaning that data in the database is never over-written or deleted, once committed, the data is static, read-only, but retained for future reporting.

    4.    Integrated, meaning that the database contains data from most or all of an organization's operational applications, and that this data is made consistent.

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