Do we have some way to reduce Dimension table size using NLS?

  Initially we thought the Cube
     archive in NLS would be like:
Replicate Cube in NLS with DAP.  DAP creation will create a new structure same like "Star Schema".
While we load data to NLS it deletes from DB.
And hence it reduced size of the DB.
Associated Dimensions will also be replicated in the NLS.
After actually implementation we found :
Fact table size is reducing and DB size with associated E/F fact table is reducing
Dimension tables are still there in DB, and still saving space in DB.
Do we have some other way to reduce Dimension table size using NLS?
As when we are analyzing top 100 tables in SAP BW, we are seeing multiple dimensions are part
of this list.
Thanks,
Jaydip

Hi Jaydip,
Please check below link it might be helpful for you.
http://www.informatik.uni-jena.de/dbis/lehre/ss2011/dbarch/SAP_BW_DB2_NLS_22062011.pdf

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