Questions tagged [data-flow-diagram]
A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system, modeling its process aspects. DFDs can also be used for the visualization of data processing (structured design).
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Is my Level 1 and Level 2 DFD for the "Manage User Account" process correct?
I’m working on a Physical DFD Level 1 and 2 for an anomaly detection app, but this this post only concerns the DFD’s user-account processes. I want to check if my decomposition of a specific process ...
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Do data stores in a Level 1 DFD have to match the tables in the ERD exactly?
We're developing an anomaly detection web app as a Capstone Project, and we're currently revising our manuscript.
In our last capstone defense, one of our panelists mentioned that the data stores in ...
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How should I model the external entity and actor in my DFDs and UC Diagram for an app used by the QA officer (and possibly other staff) in an agency?
I’m creating a 0- and 1-Level DFD, along with a UC Diagram, for a data cleansing web application for a government agency.
The primary user of the system is the agency’s Quality Assurance (QA) Officer.
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Are there still advantages of the data-flow diagram in a world of SysML and UML?
I recall some criticizing structured analysis as something outdated, but it seems that it is still in use today at least with DFDs. A company who claims to be agile in its ways was using a tool called ...
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Could conditions be used with Data Flow Diagrams?
I'm trying to make a DFD for this scenario:
after admission, the patient gets the service he needs.
I've been trying to do it using this diagram (there are 3 available services):
but I don't think it'...
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A Case Study Dataflow Diagram
From the book Essentials of Systems Analysis and Design by Joseph S. Valacich, Joey F. George, Jeffrey A. Hoffer, we have a study case, with the following 0 DFD :
This diagram raises the following ...
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Data Flow in Data Flow Diagram
Consider the following level - 0 dataflow diagram for a patient management system :
Consider the doctor entity, the system provides an appointment report to the doctor. If the system only generates ...
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What does it mean the fish objects on the architecture diagram? [closed]
What does it mean this fish object on the architecture diagram?
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How to represent a duplicate data store in a data flow diagram (DFD) in the Yourdon DeMarco notation?
I am looking for a way to show duplicate data-stores in data-flow diagrams (DFD). With "duplicate" I mean multiple occurrences of the same symbol to avoid too many crossing flows.
In Gane &...
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In a Data Flow Diagram, can 2 entities use the same process (with the same incoming data flow)?
For a school project, I need to make a DFD for an educational game, where both students and teachers need to be able to view the game's leaderboard.
Currently in my diagram, "Student" and &...
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Do data stores appears in Level 1 DFD?
Let’s consider that Context diagram is the diagram that describe the system as a single process and level 0 diagram is the one that decomposes this main process into major process and so on. I am ...
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Draw Data Flow Graph with Constructor and Functions
I am new to software testing and would like to know whether it's appropriate to draw a data flow graph that flows from initiation of variables to constructor and method.
Is there something wrong with ...
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Data Flow Diagram for patient information system for a hospital
I have an example for a DFD for a patient information system implemented in a certain hospital. The below figure, represents the overview diagram (level 0-diagram, if we consider that the first level ...
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What kind of diagram is this?
I was given an API document that contained this diagram. And I was amazed at how cleanly it presents the flow of data between multiple endpoints by putting the end points in vertical silos. Data ...
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Refining DFD of an RPG
I am making a game to help childern learn Urdu (Urdu Boli = Urdu Language)
This is the high level context diagram of the game.Considering an RPG can any additions be made to the diagram?
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