Add Subject Areas after production

Question

We are implementing Oracle BI Apps for customer who initially requires only Financials Analytics. Now he want to add Procurement and Spend Analytics and Supply Chain Analytics. Anybody knows how to include new subject areas in a ETL extraction without doing a full load for the subject areas extracted before?

Answer 1

Let me try to describe the model as best as possible.
I am trying to calculate the profitability of each customer for two banks. These banks have deposits, loans, leases, etc. Each customer is identified by a global id. The global ID is a dimension table. Then there is a the time Dimension.
Bank A has it's own deposits and Bank B does too. A customer can/cannot have accounts in Bank A/Bank B/or Both Bank A and B. Similarly a customer can have a lease in either or both of the banks and this continues for other products.
Each Global ID is referenced to a Client ID. Each client ID can have several Internal Keys which are referenced to each account the customer might have.
For bank A > deposits, i have a fact table which connects to the Dim Time and Dim Global customer table. there are other dimension tables which connect to the same fact.
Similarly bank B > deposits has the same look and feel. Only thing is i connected the fact of bank b - deposits to the same Time and Global Customer table. So now there is a circular join. And this join gets really complicated when i add the fact tables of other categories such as leasing, pawning, etc. Since my goal is to calculate the total of profitability from each of these categories (deposits + loans + pawning +...), i tried to write a formula but i do get the error that "no fact exists"
For the time being i have created individual connections for each product. For example, deposits will have its own global customer and time and be connected to that particular fact. Similarly, pawning will have its own global customer and time (created alias tables for each of them). So right now i have the profitability of each customer on different categories.
What i want to do is get the total of profitability for an individual customer for all the product type the customer has, and use that for further specific formula calculations.