Telephone Directory Management System Dataflow Diagram

Posted By namita on July 11, 2017

Telephone Directory Management System Data flow diagram is often used as a preliminary step to create an overview of the Telephone without going into great detail, which can later be elaborated.it normally consists of overall application dataflow and processes of the Telephone process. It contains all of the userflow and their entities such all the flow of New Phone Number, Contact Details, Address, City Name, List of Contact, Email ID, Login. All of the below diagrams has been used for the visualization of data processing and structured design of the Telephone process and working flow.


Zero Level Data flow Diagram(0 Level DFD) of Telephone Directory Management System :

This is the Zero Level DFD of Telephone Directory Management System, where we have eloborated the high level process of Telephone. It’s a basic overview of the whole Telephone Directory Management System or process being analyzed or modeled. It’s designed to be an at-a-glance view of List of Contact,Email ID and Login showing the system as a single high-level process, with its relationship to external entities of New Phone Number,Contact Details and Address. It should be easily understood by a wide audience, including New Phone Number,Address and List of Contact In zero leve DFD of Telephone Directory Management System, we have described the high level flow of the Telephone system.

High Level Entities and proccess flow of Telephone Directory Management System:

  • Managing all the New Phone Number
  • Managing all the Contact Details
  • Managing all the Address
  • Managing all the City Name
  • Managing all the List of Contact
  • Managing all the Email ID
  • Managing all the Login
Zero Level Data flow Diagram(0 Level DFD) of Telephone Directory Management System

First Level Data flow Diagram(1st Level DFD) of Telephone Directory Management System :

First Level DFD (1st Level) of Telephone Directory Management 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 Telephone Directory Management System system as a whole. It also identifies internal data stores of Login, Email ID, List of Contact, City Name, Address that must be present in order for the Telephone system to do its job, and shows the flow of data between the various parts of New Phone Number, Address, Email ID, Login, List of Contact 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 Telephone.

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

  • Processing New Phone Number records and generate report of all New Phone Number
  • Processing Contact Details records and generate report of all Contact Details
  • Processing Address records and generate report of all Address
  • Processing City Name records and generate report of all City Name
  • Processing List of Contact records and generate report of all List of Contact
  • Processing Email ID records and generate report of all Email ID
  • Processing Login records and generate report of all Login
First Level Data flow Diagram(1st Level DFD) of Telephone Directory Management System

Second Level Data flow Diagram(2nd Level DFD) of Telephone Directory Management System :

DFD Level 2 then goes one step deeper into parts of Level 1 of Telephone. It may require more functionalities of Telephone to reach the necessary level of detail about the Telephone functioning. First Level DFD (1st Level) of Telephone Directory Management System shows how the system is divided into sub-systems (processes). The 2nd Level DFD contains more details of Login, Email ID, List of Contact, City Name, Address, Contact Details, New Phone Number.

Low level functionalities of Telephone Directory Management System

  • Admin logins to the system and manage all the functionalities of Telephone Directory Management System
  • Admin can add, edit, delete and view the records of New Phone Number, Address, List of Contact, Login
  • Admin can manage all the details of Contact Details, City Name, Email ID
  • Admin can also generate reports of New Phone Number, Contact Details, Address, City Name, List of Contact, Email ID
  • Admin can search the details of Contact Details, List of Contact, Email ID
  • Admin can apply different level of filters on report of New Phone Number, City Name, List of Contact
  • Admin can tracks the detailed information of Contact Details, Address, City Name, , List of Contact
Second Level Data flow Diagram(2nd Level DFD) of Telephone Directory Management System
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