What is Cardinality

Answer Posted / itesh biswal

Simple man

carnality and join are 2 diff things ,u can see in ur
cognos application u will be having 1:n the first part
explains u about the join and the second part tells u the
cardinality ,if in ur 1st part its 1:1 then equi ,if 1:0
then outer if 0:1 then outer if 0:0 its full outer

and the second part tell u the cardinality remember
cardinality never change the query output ,it only identify
the fact and dimension which is very important ,u remember
if u have muti-star schema then it should write two query
depend on two fact ,so pls do it correctly ,
1:n represents fact
1.1 represents dim

Check where is ur measure, put many in that cardinality


Cheers

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