Oracle Order Entry Cycle Process

Can somebody explain the complete Oracle Order Entry Cycle with all the background processes included?? Example during pickrelease, what are the processes that happen in the background with respect to other modules, table updating etc. When and how is a work order created, what is the direct relation between work order and sales order?? The cycles should start from creating customers all the way till the order is completed and closed including cancelled lines etc. Is there a direct link betweenOE and GL?? If yes, how?? Various interfaces like OE/INV, OE/AR, Demand Interface etc..