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Message Posted: Mon, 16 Oct 2006 @ 10:36:42 GMT


     
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Subj:   Logical and physical rows
 
From:   Vijay RK

Gurus,

I read the following in one of the manuals

"By default, a NUSI defined on a joined index will maintain rowid pointers to only physical rows.In order to use the NUSI to cover the data stored in a join index, Rowids must be kept for each associated logical row ".

The second statement is a bit confusing for me. Can someone throw some light on what is meant by a 'logical row'(as in the above)? Or is there a different connotation to the statement which im unable to grasp :( ?


Many thanks

Vijay



     
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