Characteristics of Data Flow Diagram (DFD)
Below are some characteristics of Data Flow Diagram (DFD):
- Graphical Representation: Data Flow Diagram (DFD) use different symbols and notation to represent data flow within system. That simplify the complex model.
- Problem Analysis: Data Flow Diagram (DFDs) are very useful in understanding a system and can be effectively used during analysis. Data Flow Diagram (DFDs) are quite general and are not limited to problem analysis for software requirements specification.
- Abstraction: Data Flow Diagram (DFD) provides a abstraction to complex model i.e. DFD hides unnecessary implementation details and show only the flow of data and processes within information system.
- Hierarchy: Data Flow Diagram (DFD) provides a hierarchy of a system. High- level diagram i.e. 0-level diagram provides an overview of entire system while lower-level diagram like 1-level DFD and beyond provides a detailed data flow of individual process.
- Data Flow: The primary objective of Data Flow Diagram (DFD) is to visualize the data flow between external entity, processes and data store. Data Flow is represented by an arrow Symbol.
- Ease of Understanding: Data Flow Diagram (DFD) can be easily understand by both technical and non-technical stakeholders.
- Modularity: Modularity can be achieved using Data Flow Diagram (DFD) as it breaks the complex system into smaller module or processes. This provides easily analysis and design of a system.
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)