10 Chapter 10: The Traditional Approach to Design Systems Analysis and Design in a Changing World, 3rd Edition 10 Learning Objectives Develop a system flowchart Develop a structure chart using transaction analysis and transform analysis Write pseudocode for structured modules Systems Analysis and Design in a Changing World, 3rd Edition 2 10 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 Systems Analysis and Design in a Changing World, 3rd Edition 3 The Structured Approach to Designing the Application Architecture 10 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 Systems Analysis and Design in a Changing World, 3rd Edition 4 10 Structured Design Models Systems Analysis and Design in a Changing World, 3rd Edition 5 10 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 Systems Analysis and Design in a Changing World, 3rd Edition 6 10 DFD with Automation System Boundary Systems Analysis and Design in a Changing World, 3rd Edition 7 10 The System Flowchart Representation of various computer programs, files, databases, and associa