Inventory Sales System Dataflow Diagram

Posted By namita on July 5, 2017

Inventory Sales System Data flow diagram is often used as a preliminary step to create an overview of the Inventory without going into great detail, which can later be elaborated.it normally consists of overall application dataflow and processes of the Inventory process. It contains all of the userflow and their entities such all the flow of Inventory Item, Sale, Item Number, Item Description, Stock Quantity, Type of Item, Login. All of the below diagrams has been used for the visualization of data processing and structured design of the Inventory process and working flow.


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

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

High Level Entities and proccess flow of Inventory Sales System:

  • Managing all the Inventory Item
  • Managing all the Sale
  • Managing all the Item Number
  • Managing all the Item Description
  • Managing all the Stock Quantity
  • Managing all the Type of Item
  • Managing all the Login
Zero Level Data flow Diagram(0 Level DFD) of Inventory Sales System

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

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

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

  • Processing Inventory Item records and generate report of all Inventory Item
  • Processing Sale records and generate report of all Sale
  • Processing Item Number records and generate report of all Item Number
  • Processing Item Description records and generate report of all Item Description
  • Processing Stock Quantity records and generate report of all Stock Quantity
  • Processing Type of Item records and generate report of all Type of Item
  • Processing Login records and generate report of all Login
First Level Data flow Diagram(1st Level DFD) of Inventory Sales System

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

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

Low level functionalities of Inventory Sales System

  • Admin logins to the system and manage all the functionalities of Inventory Sales System
  • Admin can add, edit, delete and view the records of Inventory Item, Item Number, Stock Quantity, Login
  • Admin can manage all the details of Sale, Item Description, Type of Item
  • Admin can also generate reports of Inventory Item, Sale, Item Number, Item Description, Stock Quantity, Type of Item
  • Admin can search the details of Sale, Stock Quantity, Type of Item
  • Admin can apply different level of filters on report of Inventory Item, Item Description, Stock Quantity
  • Admin can tracks the detailed information of Sale, Item Number, Item Description, , Stock Quantity
Second Level Data flow Diagram(2nd Level DFD) of Inventory Sales System
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