Any relation between indexes and high cardinality.............

HI,
what is difference b/w index and high cardinality?
and also difference b/w index and line item dimension?
Thanks

Hi,
High Cardinality:
Please Refer this link, especially the post from PB:
line item dimension and high cardinality?
Line Item Dimension:
Please go through this link from SAP help for line item dimension
http://help.sap.com/saphelp_nw04/helpdata/en/a7/d50f395fc8cb7fe10000000a11402f/content.htm
Also in this thread the topic has been discussed
Re: Line Item Dimension
BI Index:
There are two types of indexes in BW on Oracle, bitmap and b-tree
Bitmap indexes are created by default on each dimension column of a fact table
Setting the high cardinality flag for dimension usually affects query performance if the dimension is used in a query.
You can change the bitmap index on the fact table dimension column to a b-tree index by setting the high cardinality flag. For this purpose it is not necessary
to delete the data from the InfoCube
Refer:
Re: Bitmap vs BTree
How to create B-Tree and Bitmap index in SAP
Re: Cardinality
Line Item Dimesnion
Hope it helps...
Cheers,
Habeeb

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