Example methods and systems are directed to dispatching database tasks. An application may access data associated with a task. The data may indicate features (e.g., processing functionality) that will be used to complete the task. The application may determine whether all such features are implemented in the database layer. The application may dispatch the task to the database layer if all features are implemented therein. The application may perform the task in the application layer if one or more of the features are not available in the database layer. In some example embodiments, the task involves materials requirements planning. Such a task may include determining, for a given bill of materials (“BOM”), the quantity of materials available on-hand, the quantity available from suppliers, the transport or delivery time for the various quantities, and other data regarding the BOM.