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12. Brief Summary Description on HOW TO Load Data into a STAR SCHEMA Data Warehouse..then PROCESS Cube?

Posted on 2014-10-16
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Experts:

You have an incremental data set that needs to populate into a Star Schema and then the corresponding SSAS cube needs to be processed. The STAR contains 1 fact, 4 Type two dimensions, 1 Time dimension, 3 Static dimensions, and 1 junk dimension. You need to be able to account for all incremental data in the STAR.

Walk through the process of loading the data and the steps of processing the SSAS cube.

Please only provide a BRIEF summary of how you would load this Star Schema and then processing the Cube.

Thanks!
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Question by:MIKE
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jogos earned 2000 total points
ID: 40386022
With "incremental load" you must think good about what you realy need. Just add the new data or also be able to update/delete data that has already been loaded. Lookup/conditionals split are the way to branch that path.

Only adding the new and new can be identified (ID > last ID, createddatetime .... ) then it is realy good for performance to test that so you don't evaluate all old data . But be aware if corrections can be made on old data it wont be populated anymore.

The dimensions you must evaluate if the it already exists  if not insert, if it does maybe something can be changed (address of customer)

An example of an incremental load
http://vsteamsystemcentral.com/cs21/blogs/applied_business_intelligence/archive/2007/05/21/ssis-design-pattern-incremental-loads.aspx
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