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    Data Warehousing Interview Questions & Answers

    Below we have listed all the Data Warehousing Interview Questions and answers. Feel free to comment on any Data Warehousing Interview Questions or answer by the comment feature available on the page.

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    Subcategories for Data Warehousing Interview Questions - The following are sub categories for which Interview Questions are available under this category. Please select the appropriate sub-category:

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    Analysis services Interview Questions (22)

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    Data Warehousing Concepts Interview Questions (124)

    DataStage Interview Questions (182)

    Enterprise Data Warehouse Interview Questions (150)

    ETL Interview Questions (105)

    General Datawarehousing Interview Questions (117)

    Informatica Interview Questions (510)

    MicroStrategy Interview Questions (46)

    Operational data store Interview Questions (17)

    Reportnet Interview Questions (44)

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    Question
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    What are the major differences between Informatica 7.1,8.1,8.5 and 8.6?
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    What is galaxy schema?
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    What is surrogate key?
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    Which is better among connected lookup and unconnected lookup transformations in informatica or any other ETL tool?
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    What is the use of bridge table. Can give a simple example?
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    In Dimensional modeling fact table is normalized or denormalized?in case of star schema and incase of snow flake schema?
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    what is project architecture in datastage
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    What is Data warehousing Hierarchy?
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    What is the difference between data warehousing and business intelligence?
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    What kinds of data belong in a data warehouse?
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    What is ER Diagram?
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    What is junk dimension? What are junk dimension and degenerated dimension?
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    What is Meta data?
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    What is difference between stored procedure transformation and external procedure transformation?
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    What is the difference between OLAP and data warehouse?
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    Why is Data Modeling Important?
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    What is snapshot with reference to data warehouse?
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    Can any one explain about Core Dimension, Balanced Dimension, and Dirty Dimension?
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    What is loop in Data warehousing?
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    What is an error log table in Informatica occurs and how to maintain it in mapping?
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