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Q1. Why do we use determinant? Please explain with examples?
Q2. What is new arrive dimensions? Please explain with examples?
Q3. Suppose we have a table which is holding a large number
of records. There are 4 columns which are very frequently
used in the Cognos reports, so can we create indexing on
those 4 columns?
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Answer Posted / ssr
Let us understand the determinants in simplest terms.
Company CEO Empl
-----------------------------------------------------
Ennov Vijay Vishwas
Ennov Vijay Mritunjay
Ennov Vijay Farrukh
Company Revenue
---------------------------------------
Ennov 500000
Carrot 400000
When above 2 tables are joined on Company field and you
bring following items in the query Company,CEO, Revenue. The
following will be the output
Company CEO Revenue
-------------------------------------------------
Ennov Vijay 500000
Ennov Vijay 500000
Ennov Vijay 500000
You got three rows because Ennova had three employees, here
cognos was not able to understand that granulirity of both
these tables was different. You have to defined it
explicitely and end product of this is called DETERMINANTS.
Here in the first table you have to define 2 determinants
CEO and Company and and check the check box of group by. Now
when you run the query in cognos you will find that
repeation is not there
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