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).

Filter by
Sorted by
Tagged with
0
votes
1answer
75 views

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?
1
vote
2answers
57 views

Drawing UML activity diagram for Statistics feature

I need to draw a UML Activity diagram for a school java software engineering project I’m required to do. I’m quite new to this and I’m not sure what should be shown and what should not be shown. For ...
0
votes
3answers
167 views

Diagram to show how one object “becomes” another?

I am working in a purchasing system where we take calls: public class Call { public List<CallItem> CallItems { get; set; } } The calls can be turned into quotes, where call items become ...
2
votes
0answers
145 views

Avoiding crossing lines in DFD diagrams

I have researched DFDs reasonably extensively, and received some feedback from peers about my first DFD. I have since reworked it to avoid lines crossing by duplicating the 'Pokemon' data store. I ...
-1
votes
1answer
395 views

Is there such thing as an internal entity in DFD?

According to my teacher, A CONTEXT diagram NEVER shows what goes on INSIDE a system! It only shows the EXTERNAL entities and the circle is the SYSTEM BOUNDARY. ie the boundary between what is ...
-1
votes
1answer
262 views

How to show data flow between entities in a data flow diagram when input data and output data is the same?

For example : Customer --->(customer details) SEND DETAILS --->(customer details) --->Clerk
1
vote
1answer
1k views

What is a good diagrammatic way to represent async event communication between two systems?

What is a good diagrammatic way to represent asynchronous event communication between two systems (the pub sub model)? I am not looking for tools but more of a representation. Is it a sequence diagram,...
2
votes
1answer
2k views

Data flow diagram with login

I am creating a system that allows an admin to login, manage items, customers, reservations and many more. But as i have asked my professor, he told me that before the admin can access the manage ...
-2
votes
1answer
284 views

Do context diagrams have levels?

I heard that the context analysis diagram has different levels. I couldn't find this in .Net, but I have seen that a DFD has different levels. Do context diagrams have any levels (level0, level1, ...
2
votes
3answers
8k views

Data Flow Diagrams - Difference between Lines and Arrows

I'm currently working with Visio to create Data Flow Diagrams for a System Analysis and Design class but I'm unsure what the difference between ------ and ------> is. I can connect 2 shapes ...