Help in getting Headcount for a month from a flatfile

Question

Hi All,
I am need one help regarding i need to load data from a flat file like for eg
empno  Location     joiningdate     releivingdate
123       USA         11/3/2008        12/9/2008
345       Mexico     14/4/2008         13/11/2008
376       USA         12/2/2008          Null
and the condition is if the releving date  have some value it should taken  employee left the company
i need to create a cube and also on top of the cube need to create a report also
in the query  the formula is
for eg if the user is giving i/p like 05.2008( what ever the user is giving i/p it should automatically taken from current finanacial year ie april)
and in the report i need to write a formula for
%YTD for attrition =( (opening headcount of april 1st+ closing heda count of april end)/2 +opening head count on may 1st + closing head count of may end/2))/n*100
i am getting stuk up with how to get the opening headcount for month and also the closing head count for a month.
VR

Answer 1

There's actually an example of this in the business content in the 0papa_c02 cube:
Re: Head Count
There's also some info about this cube in note 336229.
Similarly, for your data, you might have something like this:
headcount_vc is the change in headcount on the calday.
empno      Location      calday        headcount_vc
123      USA      11/3/2008         1
345      Mexico      14/4/2008         1
376      USA      12/2/2008         1
123      USA      12/9/2008         -1
345      Mexico      13/11/2008   -1
There would be another key figure in the cube headcount_nc which is the cumulation of headcount_vc.
When aggregated together up to a certian day, you will have the correct headcount.
It can get fancier if need be for example if you want a count of retired employees or something:
Anything you want counts by should be time dependant though.
empno      Location      calday        headcount_vc        status
123      USA      11/3/2008         1          active
345      Mexico      14/4/2008         1          active
376      USA      12/2/2008         1          active
123      USA      12/9/2008         -1          active
345      Mexico      13/11/2008   -1          active
123      USA      12/9/2008         1          retired
345      Mexico      13/11/2008   1          retired