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Enhancing an existing ODS with 40m records

We want to enhance the existing ODS which has approximately 40 million records. My question is if I add new infobjects...

to existing ODS, do I need to reload the data? What are the possible options?


As long as you keep the data elements that makes an ODS record unique (key), you should be able to add new fields in an ODS object definition. Ideally, you should define some indicator what that change occured in an existing record fom historic context. And also need to consider how to handle missing values in the past records when those fields were not present.

From database performnace, it is good idea to export and import the same table to get rid of any table fragmentation. This is typical DBA task and nothing to do with BW spcifically.


This was last published in July 2002

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