Answer / lakshmi
Using Star schema grouping we can resolve the ambiguous joins
if there is more than one path exists between query
subjects then we may get wrong data to overcome that one we
have to identify where the loop is occured then select the
query subjects right click create star schema grouping then
it will ask name space if u give any name for that then
click k then one Alias Shortcut is created for the entire
query subjects whatever you selected which is nothing but
phisically exists and which is used to resolve the loops
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