CH10 - Systems Analysis and Design in a Changing World,...

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10 Systems Analysis and Design in a Changing World, Fifth Edition
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10 Systems Analysis and Design in a Changing World, 5th Edition 2 Learning Objectives Describe the steps involved in the traditional approach to designing the application architecture Develop a system flowchart Develop a structure chart using transaction analysis and transform analysis Write pseudocode for structured modules Explain how to use three-layer design with the traditional approach
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10 Systems Analysis and Design in a Changing World, 5th Edition 3 Overview Traditional approach to designing software Overview of structured models, model development process, related terminology How data flow diagrams are annotated with automation boundary information How analysis phase models are transformed into design models using system flowcharts, structure charts, and module pseudocode Integration into other design phase activities Applying approach to a three-layer architecture
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10 Systems Analysis and Design in a Changing World, 5th Edition 4 The Structured Approach to Designing the Application Architecture Application software programs Designed in conjunction with database and user interface Hierarchy of modules Design internal logic of individual modules Top-down approach DFDs with automation boundaries System flowcharts, structure charts, pseudocode
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10 Systems Analysis and Design in a Changing World, 5th Edition 5 Structured Design Models Figure 10-1
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10 Systems Analysis and Design in a Changing World, 5th Edition 6 The Automation System Boundary Partitions data flow diagram processes into manual processes and automated systems Processes can be inside or outside boundary Data flows can be inside and outside of boundary Data flows that cross system boundary represent inputs and outputs of system Data flows that cross boundaries between programs represent program-to-program communication
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10 Systems Analysis and Design in a Changing World, 5th Edition 7 DFD with Automation System Boundary Figure 10-2
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10 Systems Analysis and Design in a Changing World, 5th Edition 8 The System Flowchart Representation of various computer programs, files, databases, and associated manual processes that
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This note was uploaded on 04/08/2010 for the course BUSINESS 4456 taught by Professor Blackwell during the Spring '10 term at West Liberty.

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CH10 - Systems Analysis and Design in a Changing World,...

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