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DIAGRAM 14

Gane Sarson Diagram

"The Gane & Sarson method is based on the building of a logical model of the system, using graphical techniques to enable users, analysts, and designers to get a clear and common picture of the system and how its parts fit together to meet the user's needs.
The methodology involves building a system top-down by successive refinement. First, an overall system data flow is created. Then, detailed data flows are created. Next, the details of the data structures and the process logic is determined. Finally, design of modular structures is begun.
The focus of analysis in the Gane and Sarson method is the Data Flow diagram, which is used to describe the processes of the system, and how the processes transform data."
[Gane & Sarson Methodology. ibm.com]

The vector stencils library Gane-Sarson Notation from the solution Data Flow Diagrams contains specific symbols of the Gane-Sarson notation such as process symbol, connector symbol, jump symbol for ConceptDraw DIAGRAM diagramming and vector drawing software. The Data Flow Diagrams solution is contained in the Software Development area of ConceptDraw Solution Park.

Use the Data Flow solution to draw data flow diagrams for your business documents, presentations and websites.

Gane Sarson Diagram *

Example 1. Gane Sarson Diagram

The example above illustrates the Gane-Sarson notation usage for drawing a data flow diagram for on-line appointment scheduling. "The patient enters a web inquiry which generates two checks against different databases, and the information is returned to the patient for acceptance."
This example was redesigned from philblock.info











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DIAGRAM 14