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Data Flow Diagram

Data Flow Diagram (DFD) is the part of the Structured Systems Analysis and Design Methodology (SSADM), which is intended for information systems projection and analysis. Data Flow Diagrams allow graphically represent the data flows in information system and analyze the data processing during the structural projection. This type of diagrams lets visually show a work of information system and results of this work, it is often used in connection with human processes and can be displayed as Workflow diagram. Data Flow Diagram visualizes processes and functions, external entities, data depositories, and data flows connecting these elements and indicating direction and data character. Each of these elements used for DFD has its own graphical notation. There are two notations to draw DFDs - Yourdon & Coad and Gane & Sarson. ConceptDraw DIAGRAM extended with Data Flow Diagrams (DFD) solution from Software Developmant area is ideal for designing professional looking DFDs, which can be then easily exported in various formats.
The Data Flow Diagrams solution from the Software Development area of ConceptDraw Solution Park provides three vector stencils libraries for drawing DFD using the ConceptDraw PRO diagramming and vector drawing software . The design elements library "Data flow diagram (DFD)" contains 15 symbols for drawing both context-level data flow diagram and Level 1 DFD. The design elements library "DFD, Gane-Sarson notation contains 12 symbols of Gane-Sarson DFD notation. The design elements library "DFD, Yourdon and Coad notation contains 22 symbols of Yourdon/ DeMarco DFD notation.
Use these DFD symbol libraries to design the process-oriented models, data-oriented models, data flowcharts, data process diagrams, structured analysis diagrams, and information flow diagrams.
"A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system, modeling its process aspects. Often they are a preliminary step used to create an overview of the system which can later be elaborated. DFDs can also be used for the visualization of data processing (structured design).
A DFD shows what kinds of information will be input to and output from the system, where the data will come from and go to, and where the data will be stored. It does not show information about the timing of processes, or information about whether processes will operate in sequence or in parallel (which is shown on a flowchart)." [Data flow diagram. Wikipedia]
The example "Design elements - Data Flow Diagram (DFD)" is included in the Data Flow Diagrams solution.
DFD symbols
DFD symbols, stop state, multi state, stop state, state, multi state, state, start state, multi state, process, object state, object, multiple process, multi-state, loop, external interactor, external entity, entity relationship, entity, data store, data process, condition, class and object, class, DFD,
Used Solutions

Data structure diagram with ConceptDraw DIAGRAM

Data structure diagram (DSD) is intended for description of conceptual models of data (concepts and connections between them) in the graphic format for more obviousness. Data structure diagram includes entities description, connections between them and obligatory conditions and requirements which connect them. Create Data structure diagram with ConceptDraw DIAGRAM.