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A control flow diagram (CFD) is a diagram to describe the control flow of a business process, process or review Control flow diagrams were developed in the 1950s, and are widely used in multiple engineering disciplines. They are one of the classic business process modeling methodologies, along with flow charts, data flow diagrams, functional flow block diagram, Gantt charts, PERT diagrams, and IDEF.〔 Thomas Dufresne & James Martin (2003). ("Process Modeling for E-Business" ). INFS 770 Methods for Information Systems Engineering: Knowledge Management and E-Business. Spring 2003〕 == Overview == A control flow diagram can consist of a subdivision to show sequential steps, with if-then-else conditions, repetition, and/or case conditions. Suitably annotated geometrical figures are used to represent operations, data, or equipment, and arrows are used to indicate the sequential flow from one to another.〔(FDA glossary of terminology applicable to software development and computerized systems ). Accessed 14 Jan 2008.〕 There are several types of control flow diagrams, for example: * Change control flow diagram, used in project management * Configuration decision control flow diagram, used in configuration management * Process control flow diagram, used in process management * Quality control flow diagram, used in quality control. In software and systems development control flow diagrams can be used in control flow analysis, data flow analysis, algorithm analysis, and simulation. Control and data are most applicable for real time and data driven systems. These flow analyses transform logic and data requirements text into graphic flows which are easier to analyze than the text. PERT, state transition, and transaction diagrams are examples of control flow diagrams.〔Dolores R. Wallace et al. (1996). (''Reference Information for the Software Verification and Validation Process'' ), NIST Special Publication 500-234.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Control flow diagram」の詳細全文を読む スポンサード リンク
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