Types of Data Flow Diagram (DFD)
There are two types of Data Flow Diagram (DFD)
- Logical Data Flow Diagram
- Physical Data Flow Diagram
Logical Data Flow Diagram (DFD)
Logical data flow diagram mainly focuses on the system process. It illustrates how data flows in the system. Logical Data Flow Diagram (DFD) mainly focuses on high level processes and data flow without diving deep into technical implementation details. Logical DFD is used in various organizations for the smooth running of system. Like in a Banking software system, it is used to describe how data is moved from one entity to another.
Physical Data Flow Diagram
Physical data flow diagram shows how the data flow is actually implemented in the system. In the Physical Data Flow Diagram (DFD), we include additional details such as data storage, data transmission, and specific technology or system components. Physical DFD is more specific and close to implementation.
What is DFD(Data Flow Diagram)?
Data Flow Diagram (DFD) represents the flow of data within information systems. Data Flow Diagrams (DFD) provide a graphical representation of the data flow of a system that can be understood by both technical and non-technical users. The models enable software engineers, customers, and users to work together effectively during the analysis and specification of requirements.
Table of Content
- What is Data Flow Diagram (DFD)?
- Characteristics of Data Flow Diagram (DFD)
- Physical and Logical data flow diagrams (DFDs)
- Components of Data Flow Diagrams (DFD)
- Levels of Data Flow Diagram (DFD)
- Rules for Data Flow Diagram (DFD)
- Advantages of Data Flow Diagram (DFD)
- Disadvantages of Data Flow Diagram (DFD)
- How to Draw Data Flow Diagram?
- Conclusion
- Frequently Asked Questions (FAQs) related to Data Flow Diagram (DFD)