Data Flow Diagram (DFD)

Data flow diagrams (DFD)


The Data Flow Diagrams solution from the Software Development area of ConceptDraw Solution Park provides the DFD templates, examples and libraries of vector stencils for drawing the DFDs according to either Gane and Sarson or Yourdon and Coad notation using the ConceptDraw PRO diagramming and vector drawing software.

“Flow Chart” is usually used for the purpose of illustrating a flow of some particular data and it includes the term of “data flow diagrams”. “Flow diagrams” can be “Unified Modelling Language” (or “UML”) diagrams, “Entity Relationship Diagrams” (or “ERD”), “Data Flows Diagrams” (or “DFD”), “Structured Systems Analysis and Design Method” (“SSADM”) or “Windows and Macintosh Graphics User Interface (GUI)” design diagrams. One of the most popular is a “data flow diagram”. “DFD” is simply a graphical representation of the "data flow" in an “information system”. With its help you can illustrate a system overview without going into details, but in outline.

The “data flow diagram” can also be used for the visualization and illustration of the data processing in a structured design. Any of the ConceptDraw PRO users can make any needed “data flow diagram” any time they want with a simplicity and in a very short period of time having the right solution especially. “Data flow diagrams” are popular for the reason: they show what particular kind of information can be input to as well as output from a system. They also show the way how this data, which has to be illustrated, can advance via this system. With the help of “data flow diagram” you can also show where this data can be stored.

These “data flow diagrams” are also known as “bubble charts”. The “context-level data flow diagram” includes a “Level 1 DFD”, which can be created for a purpose of showing some of the system details, which are being modelled. The “Level 1 data flow diagrams” show the way some system is or can be divided into the smaller “sub-systems”. They also allow to follow the way, in what each of these “sub-systems” deals with these “data flows”. “Data flow diagram” can also identify the internal data stores. These stores usually have to be presented in a way of such diagram.

“Data flow diagrams” are the ones of the three in total perspectives of the “SSADM”. The sponsor of the project and the end user can be consulted at each of the stages of a system's evolution and it is always convenient to tack this “evolution” with the aid of such DF diagram. Using this type of diagram, it is simpler to represent in what way this system can operate, what it accomplishes and how the plans for this system can be implemented. These diagrams can be also used for providing the end user with the information about the inputting data, in what the system can be developed both in analysis and design phases.

There are a few different notations, which you can use for drawing any of the needed data flow diagrams (for example, “Gane and Sarson”, “Yourdon and Coad” one). Use these notations to define the different visual representations for the data stores, data flows, external entities and different processes.

You can always make so-called “Logical Data Flow Diagram”, with the help of which you can capture the data flows, which are necessary for the system to operate. With this type of Data flow diagrams it is so simple to describe the needed processes as well as the data required. Another type of “Data flow diagrams” is so-called “Physical Data Flow Diagram”. With the help of this type you can show the way, in what some system is implemented at the moment and it is also known as a “Current Physical Data flow diagram”. Using it, it is also simple to show how the designer wants the system to look in the future: “Required Physical Data flow diagram”.

To sum up, “Data flow diagrams” are well known and commonly used for a reason of the need of representing some data flow in a system as a part of the “Structured Systems Analysis and Design Methodology”. These diagrams may consist of the different components (e.g., functions and processes), representing actions happened in an information system. All main “data flow diagram” elements are: processes, external entities, data flow and store (data store). “Yourdon – de Marco” notation can be used for illustration of the ”Data Flow Diagram” objects. These “objects” are interpreted in a way of processes transforming the input data flows into the output data flows as well as data depositories serving them only for keeping the “ingoing” data but no changing them; and “data flows” changes in external entities may not be considered.

In order to make any needed “flow chart” or “data flow diagram”, you need only to download ConceptDraw PRO software and start using it having very relaxing and entertaining process of creating any needed type diagrams, including those mentioned above. Using ConceptDraw PRO software as well as the needed solution from ConceptDraw STORE application, you can be sure that your final result will look simply great as well as professionally looking. The “Data Flow Diagrams Solution” will be very helpful for those ConceptDraw PRO users, who intend to make a great looking and smart diagrams, including the “data flow” ones. There is an “Object Library”, included in the “Data Flow Diagram Solution”. It contains lots of stencils, alongside all of the needed design symbols, such as icons, that can be used for representing data flows, processes, data storage, objects and other data flow entities.

Data Flow Diagram (DFD) Solution

Example 1. Data Flow Diagrams (DFD) Solution

You can always use this “Data Flow Diagrams” solution, which can be found and downloaded from the Software Development area of ConceptDraw Solution Park on this site, or either from ConceptDraw STORE application (which can be also downloaded from this site) for drawing your own “context-level” and other DFDs while working in ConceptDraw PRO diagramming and vector drawing software. You will definitely find the “Data Flow Diagrams” solution from the Software Development area of ConceptDraw Solution Park very useful as it provides the “DFD” templates, samples as well as mentioned vector stencils libraries for drawing the “DFDs”, according to “Gane and Sarson” or “Yourdon and Coad” notation. Get this unique software today and make sure you get the right solution so you have no problems after to make the needed diagram, but to use the pre-made examples from the solution as your drafts.

Data Flow Diagram (DFD)

Example 2. Data Flow Diagram (DFD)

This example is created using ConceptDraw PRO enhanced with solution Data Flow Diagrams. This diagram shows one of the business processes to simplify and accelerate understanding, analysis, and representation.




Data Flow Diagrams Sample:

DFD Model of small traditional production enterprise
DFD Model
DFD Library - Design elements
DFD Library
DFD Process of account receivable
DFD Process
UML Class Diagram
UML Class Diagram




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TEN RELATED HOW TO's:

Flow chart Example. Warehouse Flowchart

If you want to find a way to understand complex things in minutes, you should try to visualize data. One of the most useful tool for this is creating a flowchart, which is a diagram representing stages of some process in sequential order. There are so many possible uses of flowcharts and you can find tons of flow charts examples and predesigned templates on the Internet. Warehouse flowchart is often used for describing workflow and business process mapping. Using your imagination, you can simplify your job or daily routine with flowcharts. Warehouse flowcharts are used to document product and information flow between sources of supply and consumers. The flowchart provides the staged guidance on how to manage each aspect of warehousing and describes such aspects as receiving of supplies; control of quality; shipment and storage and corresponding document flow. Warehouse flowchart, being actual is a good source of information. It indicates the stepwise way to complete the warehouse and inventory management process flow. Also it can be very useful for an inventory and audit procedures.Warehouse Flowchart
Picture: Flow chart Example. Warehouse Flowchart
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Data Flow Diagram Symbols. DFD Library

Any information system receives data flows from external sources. In order to visualize them there is a list of data flow diagram symbols that describes how the system components cooperate. If you want to create a data flow diagram, ConceptDraw PRO Solution Park has DFD Library that contains both Yourdon and Gane-Sarson notations. This figure shows the content of vector libraries, delivered with ConceptDraw solution for data flow diagram (DFD). There are three libraries composed from about 50 vector objects used to make data flow diagrams. They include a complete set of objects utilized by Yourdon-Coad and Gane-Sarson notations - two primary notations that are apply for data flow diagramming. Also, one can discover additional "Data flow diagram (DFD)" library that provides a data flow diagram elements for designing level 1 and context-level data flow diagrams.Data Flow Diagram Symbols. DFD Library
Picture: Data Flow Diagram Symbols. DFD Library
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Cross-Functional Flowchart

There are many tools to manage a process or to illustrate an algorithm or a workflow. Flowcharting is one of those tools. However, it may be difficult to show complex processes that require multiple attributes or several people in a simple flowchart, so a cross-functional flowchart would be a solution for that situation. To create such flowchart, group processes and steps to labeled rows or columns, and divide those groups with horizontal or vertical parallel lines. It is worth mentioning that there are different types of cross-functional flowcharts, like opportunity or deployment flowchart. This diagram shows a cross-functional flowchart that was made for a trading process. It contains 14 processes, distributed through 5 lines depicting the participants who interact with the process. Also there are connectors that show the data flow of information between processes. The cross-functional flowchart displays a detailed model of the trading process, as well as all participants in the process and how they interact with each other. The lines in the flowchart indicates the position, department and role of the trading process participants.Cross-Functional Flowchart. flowchart maker
Picture: Cross-Functional Flowchart
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Pyramid Diagram

When thinking about the process of decision making, it's easy to imagine it as a pyramid. We will look at a three level pyramid model as an example. Operational decisions are first that come to mind, and it's the first level. Tactical and strategic decisions are the second and the third levels. Pyramid (triangle) diagrams are used to show some hierarchical data. Because to the pyramid form of diagram, each diagram slice has a different width. The width of each segment depends on its hierarchical level. The current image illustrates the model of information system types. Most graphically the model can be represented as a three level pyramid. The first level shows a system of transaction processing It is concentrated on operational tasks. The second level is devoted to tactical solutions of the information system management. And at least, the third level addresses strategy and represents the executive information system. This three level pyramid sample is supplied with the ConceptDraw Pyramid Diagrams solution from Marketing area of ConceptDraw Solution Park.Pyramid Diagrams. 3 level pyramid model of information systems types
Picture: Pyramid Diagram
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Data Flow Diagram Examples

Data flow diagrams are the graphical tool, used in the visualization of data flow of some data processing systems. It is the valuable process modeling tool. Also designing DFD is the important component of the initial part of any information system development project. The standard symbols are used to represent the interaction of a system components and how various kinds of components influence on data flow. The ConceptDraw Data Flow Diagrams solution is design to assist professional software engineers in making DFDs according to Gane and Sarson, and Yourdon and Coad notations. Do you imagine yourself as a successful IT specialist? To your mind, they all use data flow diagram examples to learn and to get inspired. Aren’t you still with us?Data Flow Diagram Examples
Picture: Data Flow Diagram Examples
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DFD Library System

The diagrams with highest level in the hierarchy define the main processes or subsystems with external and internal data sources. To detail them, DFD Library is used to build a system of lower level diagrams. This decomposition continues hereinafter it is meaningless.DFD Library System
Picture: DFD Library System
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Data Flow Diagram Model

Developing a software project supposes architecture first. To make it proper, you can use data flow diagram model in your current project. The data flow diagram represents the Model of small traditional production enterprise that is made using Yourdon and Coad notation. It shows how the data is transfered through a process. According to the notation of Yourdon and Coad a process is represented by circles and data stores are drawn using parallel lines. This DFD was created using the ConceptDraw Data Flow Diagrams solution. Using this solution one can visualize data flow accordingly to the rules of two basic notations used for data flow modeling.DFD Model of small traditional production enterprise
Picture: Data Flow Diagram Model
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Control and Information Architecture Diagrams (CIAD) with ConceptDraw PRO

One of the three main constituents of any enterprise is the Control and Information Architecture. The rest two are Production facilities and People and Organization.Flowchart example
Picture: Control and Information Architecture Diagrams (CIAD) with ConceptDraw PRO

Data Flow Diagram Process

When you are a beginner in software development, you make a lot of mistakes. Developing logical models, or data flow diagrams is a way to see the the whole project and all the processes clearly. And some novices, unfortunately for them, miss modeling stage at the beginning of project life cycle, and get into troubles as the project grows. This image represents the data flow diagram applying symbols of Yourdon and Coad notation. This DFD depicts the data flow inside an organization department deals with receivables. The icons of standard Yourdon and Coad notation provides possibility to draw professional looking and well- readable DFD for business documentation. This data flow diagram was designed with the help of ConceptDraw PRO and its Data Flow Diagrams solution. The solution delivers three vector graphic libraries including elements of Yourdon and Coad and Gane-Sarson notations.DFD Process of account receivable
Picture: Data Flow Diagram Process
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Process Flowchart

When trying to figure out the nature of the problems occurring within a project, there are many ways to develop such understanding. One of the most common ways to document processes for further improvement is to draw a process flowchart, which depicts the activities of the process arranged in sequential order — this is business process management. ConceptDraw PRO is business process mapping software with impressive range of productivity features for business process management and classic project management. This business process management software is helpful for many purposes from different payment processes, or manufacturing processes to chemical processes. Business process mapping flowcharts helps clarify the actual workflow of different people engaged in the same process. This samples were made with ConceptDraw PRO — business process mapping software for flowcharting and used as classic visio alternative because its briefly named "visio for mac" and for windows, this sort of software named the business process management tools. This flowchart diagram shows a process flow of project management. The diagram that is presented here depicts the project life cycle that is basic for the most of project management methods. Breaking a project into phases allows to track it in the proper manner. Through separation on phases, the total workflow of a project is divided into some foreseeable components, thus making it easier to follow the project status. A project life cycle commonly includes: initiation, definition, design, development and implementation phases. Distinguished method to show parallel and interdependent processes, as well as project life cycle relationships. A flowchart diagram is often used as visual guide to project. For instance, it used by marketing project management software for visualizing stages of marketing activities or as project management workflow tools. Created with ConceptDraw PRO — business process mapping software which is flowcharting visio alternative or shortly its visio for mac, this sort of software platform often named the business process management tools.business process flowcharts, flowchart symbols, process flow diagram, workflow diagram, flowchart maker
Picture: Process Flowchart
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