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3 December, 06:52

Give three reasons why you think ETL functions are mostchallenging in data warehouse environment.

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  1. 3 December, 07:05
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    Because of the nature of the source systems ETL functions are challenging. Reasons are as following:-

    1. There are various source systems are very and contrasting.

    2. There is usually a requirement to deal with source systems on different platforms or Operating Systems.

    3. Quality of data is uncertain in many old source systems that have developed gradually over time.
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