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Thread: Process Flow

  1. #1
    Junior Member
    Join Date
    Feb 2007
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    1

    Process Flow

    Can any one explain the flow of data starting with OLTP to OLAP including staging ,summary tables,Facts and dimensions.


  2. #2
    Junior Member
    Join Date
    Mar 2007
    Answers
    4

    Smile Re: Process Flow

    DATA SOURCES--->DATA STAGING AREA--->DATA WAREHOUSE--->DATA MARTS.

    1.DATA SOURCES--They can be operational systems or flat files or external tables.
    2.DATA STAGING AREA--It is a datastore where some kind of tansformation is done.
    3.DATA WAREHOUSE--It is a database where raw data,summarized data and meta data are stored.The fact and dimension tables are made here.
    4.DATA MARTS--They are smaller data warehouses where data are stored subject area wise.
    The data staging area has 3nf data(OLTP).Data Warehouse has denormalised data(OLAP).

    There is no definite structure of a data warehouse.Basically it is dependS on your requirement.


  3. #3
    Junior Member
    Join Date
    Mar 2007
    Answers
    1

    Re: Process Flow

    hi friends,

    please tell me
    how to explain a project in interviews with example.

    please mail me prabha143reddy@yahoo.com.


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