2. Draw DFD (Diagram Level O) and Context diagram for the following scenario. The restaurant management system will collect the order from the customer and serve products based on the order. The customer has to pay for the order. After collecting the order, the employees in the restaurant produce products. The system should pay for the employees according to the time they have worked. The system should also place the order to purchase the raw materials from the vendor. After purchasing the raw material from the vendor, system should make payment for the same