Car Sales System Dataflow Diagram

Posted By namita on June 29, 2017
Car Sales System Data flow diagram is often used as a preliminary step to create an overview of the Car without going into great detail, which can later be elaborated.it normally consists of overall application dataflow and processes of the Car process. It contains all of the userflow and their entities such all the flow of Cars, Car Models, Sales, Car Owner, Inventory, Customer, Login. All of the below diagrams has been used for the visualization of data processing and structured design of the Car process and working flow.

Zero Level Data flow Diagram(0 Level DFD) of Car Sales System :

This is the Zero Level DFD of Car Sales System, where we have eloborated the high level process of Car. It’s a basic overview of the whole Car Sales System or process being analyzed or modeled. It’s designed to be an at-a-glance view of Inventory,Customer and Login showing the system as a single high-level process, with its relationship to external entities of Cars,Car Models and Sales. It should be easily understood by a wide audience, including Cars,Sales and Inventory In zero leve DFD of Car Sales System, we have described the high level flow of the Car system.

High Level Entities and proccess flow of Car Sales System:

  • Managing all the Cars
  • Managing all the Car Models
  • Managing all the Sales
  • Managing all the Car Owner
  • Managing all the Inventory
  • Managing all the Customer
  • Managing all the Login
Zero Level Data flow Diagram(0 Level DFD) of Car Sales System

First Level Data flow Diagram(1st Level DFD) of Car Sales System :

First Level DFD (1st Level) of Car Sales 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 Car Sales System system as a whole. It also identifies internal data stores of Login, Customer, Inventory, Car Owner, Sales that must be present in order for the Car system to do its job, and shows the flow of data between the various parts of Cars, Sales, Customer, Login, Inventory 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 Car.

Main entities and output of First Level DFD (1st Level DFD):

  • Processing Cars records and generate report of all Cars
  • Processing Car Models records and generate report of all Car Models
  • Processing Sales records and generate report of all Sales
  • Processing Car Owner records and generate report of all Car Owner
  • Processing Inventory records and generate report of all Inventory
  • Processing Customer records and generate report of all Customer
  • Processing Login records and generate report of all Login
First Level Data flow Diagram(1st Level DFD) of Car Sales System

Second Level Data flow Diagram(2nd Level DFD) of Car Sales System :

DFD Level 2 then goes one step deeper into parts of Level 1 of Car. It may require more functionalities of Car to reach the necessary level of detail about the Car functioning. First Level DFD (1st Level) of Car Sales System shows how the system is divided into sub-systems (processes). The 2nd Level DFD contains more details of Login, Customer, Inventory, Car Owner, Sales, Car Models, Cars.

Low level functionalities of Car Sales System

  • Admin logins to the system and manage all the functionalities of Car Sales System
  • Admin can add, edit, delete and view the records of Cars, Sales, Inventory, Login
  • Admin can manage all the details of Car Models, Car Owner, Customer
  • Admin can also generate reports of Cars, Car Models, Sales, Car Owner, Inventory, Customer
  • Admin can search the details of Car Models, Inventory, Customer
  • Admin can apply different level of filters on report of Cars, Car Owner, Inventory
  • Admin can tracks the detailed information of Car Models, Sales, Car Owner, , Inventory
Second Level Data flow Diagram(2nd Level DFD) of Car Sales System
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