Hi Venkat,
There are FULL and Delta concept you need to understand:
1) Cube:
- If you are using DELTA DTP in between DSO -> CUBE then you don’t need to delete last request. As cube have property for addition and it will take care of change coming in Key figures.
- If you are using FULL DTP then you need to delete last request as I mentioned earlier
(Cube have addition property). it will add up your Key figures and gives you wrong value.
2) DSO
DSO has property as OVERWRITE/Additive. So you can use full or delta DTP in between PSA
-> DSO. It will not impact anything on DSO. But if you are using FULL, on daily bases a lot of records follow to BW and in activation also system will take lot of time. It may impact your system performance. Use full DTP to DSO, if your business needs otherwise VICE-VERSA.
As you mentioned in your example that if one records comes on 01/01/2014 and next day
it comes again through Data Source then it means there is a changes in that
particular records in Source system. DSO will overwrite/Additive and Delta DTP to cube will take care of changes and update to cube accordingly.
Refer to following link telling more about delta:
Http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/5080c337-81e5-2c10-97af-8929424f3a4b?QuickLink=index&overridelayout=true
Thanks & Regards,
Vipin