How Many Application Module should I have ?

Hi All,
Could you please share your experience...
I am developing a ADF Faces + BC application, how can I determine how many application module should I have ?
I have modules , i.e :
Sales
AR
Inventory
Purchasing
GL
Can I say that I should have 5 application modules ? ( one for each module ? )
Thank you for your info,
xtanto

Its difficult to know if 80 is too much or jus right...The danger is that if you have many application modules, and for example a particular UI page requires you to manipluate data in many application modules then this has potential to be "overkill"...each AM requires a check out from the AM pool and database connection etc. etc. etc.
If you need to manipulate many app modules on a single UI page if you were to nest these application modules then this might be more reaslistic...However, if a couple of UI pages requires manipulation of only one app module this sounds reasonable...
I dont know if that really helps you
So if on pages A, B and C you maintain Sales Order (which is one app module) then thats ok.
If in pages X, Y and Z you manipulate Quotation (which is one app module) that would be ok as well.
If the use case is that in page F, G and H you maintain Sales and on page J you maintain Quotation then you might want to nest one inside the other.
If your use case is on screen K, L M, N, O, P and Q you access 4-5 different app modules then that would raise a concern with me...
Again, don't know if that helps,,,
One way of lookin at this is to create your VOs based on the way you want in the information to appear on your pages and from those pages think about the "uses case" and create your app modules based on those use cases...
Does that help?
regards
Grant

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