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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,

ConceptDraw PRO DFD Software

Our DFD software ConceptDraw PRO allows you to quickly create DFD with data storages, external entities, functional transforms, data flows, as well as control transforms and signals. DFD program ConceptDraw PRO has hundreds of templates, and a wide range of libraries with all nesassary ready-made drag-and-drop.

data flow diagram, DFD templates Data Flow Diagrams (DFD)

data flow diagram, DFD templates
Data Flow Diagrams solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils for drawing the data flow diagrams (DFD).
The vector stencils library "Workflow diagrams" contains 54 symbol icons of workflow diagrams.
The workflow diagrams represent information flow, automation of business processes, business process re-engineering, accounting, management, and human resources tasks in industry, business, and manufacturing.
Use this library to draw workflow diagrams in the ConceptDraw PRO diagramming and vector drawing software extended with the Workflow Diagrams solution from the Business Processes area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ business-process-workflow-diagrams
Accounting
Accounting, accounting,
Accounts Payable
Accounts Payable, accounts payable,
Accounts Receivable
Accounts Receivable, accounts receivable,
Bank
Bank, bank,
Board of Directors
Board of Directors, board of directors,
Copy Center
Copy Center, copy center,
Customer Service
Customer Service, customer service,
Distribution
Distribution, distribution,
Finance
Finance, finance,
Information Systems
Information Systems, information systems,
International Division
International Division, international division,
International Marketing
International Marketing, international marketing,
International Sales
International Sales, international sales,
Inventory
Inventory, inventory,
Legal Department
Legal Department, legal department,
Mailroom 2
Mailroom 2, mailroom,
Mailroom 1
Mailroom 1, mailroom,
Management
Management, management,
Manufacturing
Manufacturing, manufacturing,
Marketing
Marketing, marketing,
Motor Pool
Motor Pool, motor pool, car,
Packaging
Packaging, packaging,
Payroll
Payroll, payroll,
Person 1
Person 1, person,
Person 2
Person 2, person,
Personnel/ Staff
Personnel/ Staff, personnel, staff,
Publications
Publications, publications,
Purchasing
Purchasing, purchasing,
Quality Assurance
Quality Assurance, quality assurance,
Exchange
Exchange, exchange,
Reception
Reception, reception,
Research and Development
Research and Development, research and development,
Sale contract
Sale contract, sales, sale, contract,
Shipping
Shipping, shipping,
Suppliers
Suppliers, suppliers,
Telecommunications
Telecommunications, telecommunications,
Treasurer
Treasurer, treasurer,
Warehouse
Warehouse, warehouse,
Lorry
Lorry, lorry, delivery,
Quality
Quality, quality,
Production
Production, production,
Box
Box, box,
Boxes
Boxes, box,
Open box
Open box, box, open,
Payment
Payment, payment,
Receiving
Receiving, receiving,
Sales
Sales, sales,
Phone
Phone, phone,
Operator 1
Operator 1, operator,
Online booking
Online booking, online booking,
Operator 2
Operator 2, operator,
Server
Server, server,
Car
Car, car,
Mini truck
Mini truck, truck,