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Systems Analysis


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Systems Analysis

  1. 1. Systems Analysis and Design By Aptu Andy Kurniawan
  2. 2. Example of a ‘Top Down’ structure Make a meal Prepare food Set the table Cook the food <ul><li>The task of making a meal is broken down into smaller tasks – </li></ul><ul><ul><li>Preparing the food. </li></ul></ul><ul><ul><li>Setting the table. </li></ul></ul><ul><ul><li>Cooking the food. </li></ul></ul>
  3. 3. Data flow diagrams
  4. 4. Data flow diagrams A simple data flow diagram that shows a new video being added to a video library
  5. 5. Systems flowcharts A simple flowchart of a database system
  6. 6. Systems analysis <ul><li>These eight steps are: </li></ul><ul><ul><li>Fact finding. </li></ul></ul><ul><ul><li>A feasibility study. </li></ul></ul><ul><ul><li>An analysis phase. </li></ul></ul><ul><ul><li>System design. </li></ul></ul><ul><ul><li>Implementation. </li></ul></ul><ul><ul><li>Testing. </li></ul></ul><ul><ul><li>Documentation. </li></ul></ul><ul><ul><li>Evaluation. </li></ul></ul>
  7. 7. Fact finding <ul><li>Facts about existing systems can be found out by: </li></ul><ul><ul><li>Asking questions </li></ul></ul><ul><ul><li>Questionnaires </li></ul></ul><ul><ul><li>Observation </li></ul></ul><ul><ul><li>Inspection </li></ul></ul>
  8. 8. The stages of project management <ul><li>There are five stages in the software design process. </li></ul><ul><li>These are: </li></ul><ul><ul><li>Identify. </li></ul></ul><ul><ul><li>Analyse. </li></ul></ul><ul><ul><li>Design. </li></ul></ul><ul><ul><li>Implement. </li></ul></ul><ul><ul><li>Evaluate. </li></ul></ul>
  9. 9. The stages of project management <ul><li>Although project management is a mainly linear process, feedback and design changes will often mean that steps in the process have to be revisited so that necessary changes can be incorporated. </li></ul>Identify Analyse Design Implement Evaluate