- Posted By: freeproject
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Posted By freeproject on April 20, 2017
Online Food Ordering System Data flow diagram is often used as a preliminary step to create an overview of the Online Food Ordering without going into great detail, which can later be elaborated.it normally consists of overall application dataflow and processes of the Online Food Ordering process. It contains all of the userflow and their entities such all the flow of Food, Order, Customer, Payment, Delivery, Category, Item. All of the below diagrams has been used for the visualization of data processing and structured design of the Online Food Ordering process and working flow.
Zero Level Data flow Diagram(0 Level DFD) of Online Food Ordering System :
This is the Zero Level DFD of Online Food Ordering System, where we have eloborated the high level process of Online Food Ordering. It’s a basic overview of the whole Online Food Ordering System or process being analyzed or modeled. It’s designed to be an at-a-glance view of Delivery,Category and Item showing the system as a single high-level process, with its relationship to external entities of Food,Order and Customer. It should be easily understood by a wide audience, including Food,Customer and Delivery In zero leve DFD of Online Food Ordering System, we have described the high level flow of the Online Food Ordering system.High Level Entities and proccess flow of Online Food Ordering System:
- Managing all the Food
- Managing all the Order
- Managing all the Customer
- Managing all the Payment
- Managing all the Delivery
- Managing all the Category
- Managing all the Item
First Level Data flow Diagram(1st Level DFD) of Online Food Ordering System :
First Level DFD (1st Level) of Online Food Ordering System shows how the system is divided into sub-systems (processes), each of which deals with one or more of the data flows to or from an external agent, and which together provide all of the functionality of the Online Food Ordering System system as a whole. It also identifies internal data stores of Item, Category, Delivery, Payment, Customer that must be present in order for the Online Food Ordering system to do its job, and shows the flow of data between the various parts of Food, Customer, Category, Item, Delivery of the system. DFD Level 1 provides a more detailed breakout of pieces of the 1st level DFD. You will highlight the main functionalities of Online Food Ordering.Main entities and output of First Level DFD (1st Level DFD):
- Processing Food records and generate report of all Food
- Processing Order records and generate report of all Order
- Processing Customer records and generate report of all Customer
- Processing Payment records and generate report of all Payment
- Processing Delivery records and generate report of all Delivery
- Processing Category records and generate report of all Category
- Processing Item records and generate report of all Item
Second Level Data flow Diagram(2nd Level DFD) of Online Food Ordering System :
DFD Level 2 then goes one step deeper into parts of Level 1 of Online Food Ordering. It may require more functionalities of Online Food Ordering to reach the necessary level of detail about the Online Food Ordering functioning. First Level DFD (1st Level) of Online Food Ordering System shows how the system is divided into sub-systems (processes). The 2nd Level DFD contains more details of Item, Category, Delivery, Payment, Customer, Order, Food.Low level functionalities of Online Food Ordering System
- Admin logins to the system and manage all the functionalities of Online Food Ordering System
- Admin can add, edit, delete and view the records of Food, Customer, Delivery, Item
- Admin can manage all the details of Order, Payment, Category
- Admin can also generate reports of Food, Order, Customer, Payment, Delivery, Category
- Admin can search the details of Order, Delivery, Category
- Admin can apply different level of filters on report of Food, Payment, Delivery
- Admin can tracks the detailed information of Order, Customer, Payment, , Delivery
