What is the different between 11i and R12 in oracle ?

Explain the different levels of Inventory org structure ? What is Operating Unit ? What is Legal Entity ? What is Inventory Organization ? What is Set Of Books ? In which setup you control the costing method ? What is Item master organization ? How many item master organization we can setup ? What is Subinventory ? What is Locator ? Are Subinventory or Locators mandatory ? Can you copy inventory org structure ? What is shipping network ? Explain UOM and UOM class ? Explain Item status controls ? How many Item attributes we can setup ? How you can provide custom item attributes ? What are status attributes ? Explain the functionality of Item templates ? How Item types are defined ? Explain the use of cross-references ? Explain Item categories ? What is the difference between category and category set ? How do you assign items to item categories ? How do you load /import items ? Explain the use of Item revisions ? How do you search items ? How do you delete items ? What are deletion constraints ? Can we have custom deletion constraints ? What are different type of serial number uniqueness ? How do you generate serial numbers ? Can serial numbers and lot numbers co-exists for an item ? Where do you enable or disable serial / lot number capabilities for an item ? What is material status ? Explain the use of material status ? List some of the seeded material transaction types ? What are transaction sources ? Can we have custom transaction sources / types ? What are the benefits of account aliases ? What is the difference between subinventory transfer and move order ? Can move orders support inter-organization transfer ? What is miscellaneous transactions ? Explain the use of shortage notifications ? Where do you enable the shortage notifications ? How do you do inter-org transfer ? Is sales order mandatory for inter-org transfer ? Explain the difference between direct transfer and intransit transfer ? Can we purge material transactions ? Can we import material transactions through API ? What is vendor managed Inventory (VMI) ? What consigned Inventory ? What is the difference between VMI & consigned inventory ? Explain the life cycle of move orders ? What are the different ways move orders are created ? What forecasting methods oracle inventory supports ? When do you generate forecast automatically and when do you setup manually ? Explain the min-max planning functionality ? Explain the Re-Order Planning (ROP) process ? What is the difference between Min-Max and ROP ? What is safety stock ? How safety stock is calculated ? Explain replenishment counting ? What is the purpose of ABC analysis ? Explain the cycle counting process ? Explain the physical inventory process ? When do you recommend cycle counting Vs physical inventory ? What are the key flex fields (KFF) in Oracle Inventory ? What are the descriptive flex fields (DFF) in oracle inventory ?