Difference between cumulative and non-cumulative key figures

Question

Hi,
What is the difference between cumulative and non-cumulative key figures and under what conditions they are used. What is snapshort and where it is used.

Answer 1

Hi.............
Basically the key figures are of two types cumulative and non cumulative.
Cumulative are the normal one which you use always and they always bring the new values of the key figures in the delta that is if suppose A has value 10 and after change the new value is 20 then you will use cumulative key figures there, and your delta( new value) will bring 20.
but suppose your key figures field only the change in the prior value that is in this case the delta in the key figure value will bring 10 (20-10- change of 10 )as new value in the key figure A then you will have to model it through the non cumulaitve key figures.
Now
1) Cumulative is for the first case that is if the key figure alwyas brings the new values of the key figure and not the change sin the key fiures value.
2)NCum. value with NCUM value change:
In this case ther is only one field which brings the changes for a particualr key figure and you ahve to define that key figure as non cumulative.
Ex: In case of stock only one filed brings both ingoing value and outgoing value so 10 ,-4,100,-34.....
In this case you will this option and use the key figure here in the space provided.
3) In this case you haev two separate key figures one for the inflow of stocks and one for the outflow of the stocks.
you use one key figure for the inflow and one key figure for the outflow.
The main key figure autiomatically takes care of the logic and gives the correct output upon the summation
net value of stocks( inflow- outflow).
Also do remember in this case the key figure for inflow and out flow are the basic key figures that is cumulative key figures.
A non-cumulative is a non-aggregating key figure on the level of one or more objects that is always displayed in relation to time. Examples of non-cumulatives include headcount, account balance and material inventory. here the aggregation of key figure is based on the another info object
There are two different ways to define non-cumulative key figures:
• Non-cumulative key figure with non-cumulative changes:
Before you can define the non-cumulative key figure, an additional cumulative key figure containing the non-cumulative change must exist as an InfoObject.
• Non-cumulative key figure with inflows and outflows
There has to be two additional cumulative key figures as InfoObjects for non-cumulative key figures - one for inflows and one for outflows. The cumulative key figures have to have the same technical properties as the non-cumulative key figure, and the aggregation and exception aggregation have to be SUM.
Features of non-cummulative key figures
A non-aggregating key Figure.
Records are not summarized for Reporting
Exception Aggregation is being applied on these key figures on the level of one or more info objects usually with time .
Examples: Head Count, Account balance, Material stock
consider simple senario
Date Net Stock Quantity Sales Revenue
01.02.2005 40 1000
02.02.2005 50 2000
03.02.2005 25 3000
this is the query output if stock quantity has treated as cummulative and non-cummulative key figures
if stock quantity taken as a cummulative key figure
Date NET STOCK QUANTITY SALES REVENUE
01.02.2005 30 1000
02.02.2005 50 2000
03.02.2005 20 3000
RESULT 100 6000
in the above result the key figure has aggregated to the total value that wont give sense to the net stock quantity
if stock quantity taken as non-cummulative key figure
Date Net Stock Quantity (LAST) Sales Revenue
01.02.2005 30 1000
02.02.2005 50 2000
03.02.2005 20 3000
RESULT 20 6000
Hope this helps you..............
Regards,
Debjani................
Edited by: Debjani  Mukherjee on Sep 15, 2008 7:22 AM