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Gane, Chris P.
Christopher P. (Chris) Gane (September 6, 1938 – November 25, 2019) was a British/American computer scientist, consultant and information technology writer, known for developing data flow diagrams with Trish Sarson in the 1970s. Life and work Born in England, Gane obtained his MA in Physics at the University of Cambridge, and started working as computer scientist at IBM in London. In 1973 he emigrated to the United States, where he started as independent IT consultant in New York. In 1975 he joined Ed Yourdon's software company. In 1977 with Trish Sarson he founded Improved Systems Technologies (IST). In 1977 they published their best known work ''Structured Systems Analysis: Tools and Techniques,'' in which they presented a specific type of data flow diagrams.Allen Kent, James G. Williams (eds.) ''Encyclopedia of Computer Science and Technology.'' Vol. 28 - Supplement 13. (1993) p. 300 Beside his work Structured Analysis, Gane published works on rapid application developme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Flow Diagram
A data-flow diagram is a way of representing a flow of data through a process or a system (usually an information system). The DFD also provides information about the outputs and inputs of each entity and the process itself. A data-flow diagram has no control are no decision rules and no loops. Specific operations based on the data can be represented by a flowchart. There are several notations for displaying data-flow diagrams. The notation presented above was described in 1979 by Tom DeMarco as part of structured analysis. For each data flow, at least one of the endpoints (source and / or destination) must exist in a process. The refined representation of a process can be done in another data-flow diagram, which subdivides this process into sub-processes. The data-flow diagram is a tool that is part of structured analysis, data modeling and threat modeling. When using Unified Modeling Language, UML, the activity diagram typically takes over the role of the data-flow diagram. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
