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"Data flow diagrams are one of the three essential perspectives of the structured-systems analysis and design method SSADM. The sponsor of a project and the end users will need to be briefed and consulted throughout all stages of a system's evolution. With a data flow diagram, users are able to visualize how the system will operate, what the system will accomplish, and how the system will be implemented. The old system's dataflow diagrams can be drawn up and compared with the new system's data flow diagrams to draw comparisons to implement a more efficient system. Data flow diagrams can be used to provide the end user with a physical idea of where the data they input ultimately has an effect upon the structure of the whole system from order to dispatch to report. How any system is developed can be determined through a data flow diagram model.
In the course of developing a set of levelled data flow diagrams the analyst/ designers is forced to address how the system may be decomposed into component sub-systems, and to identify the transaction data in the data model.
Data flow diagrams can be used in both Analysis and Design phase of the SDLC.
There are different notations to draw data flow diagrams (Yourdon & Coad and Gane & Sarson), defining different visual representations for processes, data stores, data flow, and external entities." [Data flow diagram. Wikipedia]
The DFD (Yourdon and Coad notation) example "Process of account receivable" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Data Flow Diagrams solution from the Software Development area of ConceptDraw Solution Park.
Data Flow Diagram
Data Flow Diagram, process, external interactor, data store,
Used Solutions

software development, software engineering Software Development Area

software development, software engineering
Solutions from the Software Development Area of ConceptDraw Solution Park collect templates, samples and libraries of vector stencils for drawing the software engineering diagrams and user interface design prototypes.

cross-functional flowchart template, flowchart, example business process flow Cross-Functional Flowcharts

cross-functional flowchart template, flowchart, example business process flow
Cross-functional flowcharts are powerful and useful tool for visualizing and analyzing complex business processes which requires involvement of multiple people, teams or even departments. They let clearly represent a sequence of the process steps, the order of operations, relationships between processes and responsible functional units (such as departments or positions).

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram Computer Network Diagrams

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram
Computer Network Diagrams solution extends ConceptDraw PRO software with samples, templates and libraries of vector icons and objects of computer network devices and network components to help you create professional-looking Computer Network Diagrams, to plan simple home networks and complex computer network configurations for large buildings, to represent their schemes in a comprehensible graphical view, to document computer networks configurations, to depict the interactions between network's components, the used protocols and topologies, to represent physical and logical network structures, to compare visually different topologies and to depict their combinations, to represent in details the network structure with help of schemes, to study and analyze the network configurations, to communicate effectively to engineers, stakeholders and end-users, to track network working and troubleshoot, if necessary.

office layout, office ideas, office concepts, small office design, office floor plans, office layout ideas, home office ideas, home office design ideas Office Layout Plans

office layout, office ideas, office concepts, small office design, office floor plans, office layout ideas, home office ideas, home office design ideas
Office layouts and office plans are a special category of building plans and are often an obligatory requirement for precise and correct construction, design and exploitation office premises and business buildings. Designers and architects strive to make office plans and office floor plans simple and accurate, but at the same time unique, elegant, creative, and even extraordinary to easily increase the effectiveness of the work while attracting a large number of clients.