IT Unit 1

IT Unit 1

1. Stages of System Cycle

   • Definition of Problem
     • System analyst SCOPES problem
       • Through interviews with management
       • interviews with staff to understand current system
   • Design
     • Project Planning
     • System Requirements Specification
     • Data Dictionary
     • Testing Documentation
     • Prototyping
   • Investigation and Analysis
     • Uses Investigative Approaches
     • Requirements Specification
   • Implementation
   • Testing
   • Installation
   • Documentation
   • Evaluation
   • Maintenance

2. Investigative Approaches

   • Questionnaires
   • Interviews
   • Observation
   • Analysing Existing Documents

3. Software Development Methods

   • Evolutionary Prototyping
   • Throwaway Prototyping
   • Rapid Application Development (RAD)

4. Testing Systems

   • Extreme, Normal and Erroneous data
   • Follow Test Plan

5. Requirements, Design and System Specification

   • Requirements Specification
     • Scope of the problem
     • Timing
     • Objectives
     • Inputs
     • Outputs
     • Processing Requiremenrts
   • Design
     • Purpose
     • Screen Layouts
     • Data Structures
     • Inputs
     • Outputs
     • Processing
     • Validation Rules
     • Error Messages
     • Modelling Diagrams
     • Software
     • Hardware
     • Test Plan
   • System
     • Software applications in use
     • Storage
     • Memory
     • Input Devices
     • Output Devices
     • Processing Power

6. Roles and Responsibilities of project Team

7. Planning Tools

8. ERDs, State Transition Diagrams, DFDs and Flowcharts