Level-0 and Level-1 data flow diagram for the following system (This exercise must be in the Gane and Sarson symbols.):

Pharmacy Management System

1. Level-0 Data Flow Diagram

   1. At least two processes components

   2. At least two data stores components

   3. At least two data flows components

   4. At least two data source (or sink) components

2. Level-1 Data Flow Diagram: Pick one of the Level-0 processes you have drawn above, and draw its Level-1 DFD. Use a new tab to draw the level-1 DFD, and name the tab appropriately. The level-1 DFD should contain at least two processes, at least two data stores, and at least two data flows.

   1. At least two processes components

   2. At least two data flow component

Any help or explanation would help!!