i need to make a data flow diagram

Level 0 diagram Activities Data Outputs Receive Purchase Order Data Inputs Purchase Order(from Purchasing clerk) Approved Purchase Order Form (from CEO) Receive Order Purchase order details (from purchase orders database) Receiving report (from warehouse clerk) . Purchase Order Form (to CEO) Approved Purchase order to vendors) Purchase orders data (to purchase orders database) Purchase Order Form (to warehouse clerk) Inventory data (to flower inventory database) Receiving report details (to make payment process) Approved purchase order payment form (from CEO) Check (to vendors) Account payable details to cash account) Payment data (to cash account) Make Payment . . Receiving report details (from receive order process) Purchase order data (from purchase order database) Vendor information (from vendor database) Invoices(from vendors) Purchase order payment form (to CEO) Purchase order details (from Purchase order database) Payment details (from Cash account) Generate Report . Monthly summary report to CEO)