IT Unit 1

IT Unit 1

Stages of System Cycle
1. Definition of Problem
  1. System analyst SCOPES problem
    1. Through interviews with management
    2. interviews with staff to understand current system
2. Design
  1. Project Planning
  2. System Requirements Specification
  3. Data Dictionary
  4. Testing Documentation
  5. Prototyping
3. Investigation and Analysis
  1. Uses Investigative Approaches
  2. Requirements Specification
4. Implementation
5. Testing
6. Installation
7. Documentation
8. Evaluation
9. Maintenance
Investigative Approaches
1. Questionnaires
2. Interviews
3. Observation
4. Analysing Existing Documents
Software Development Methods
1. Evolutionary Prototyping
2. Throwaway Prototyping
3. Rapid Application Development (RAD)
Testing Systems
1. Extreme, Normal and Erroneous data
2. Follow Test Plan
Requirements, Design and System Specification
1. Requirements Specification
  1. Scope of the problem
  2. Timing
  3. Objectives
  4. Inputs
  5. Outputs
  6. Processing Requiremenrts
2. Design
  1. Purpose
  2. Screen Layouts
  3. Data Structures
  4. Inputs
  5. Outputs
  6. Processing
  7. Validation Rules
  8. Error Messages
  9. Modelling Diagrams
  10. Software
  11. Hardware
  12. Test Plan
3. System
  1. Software applications in use
  2. Storage
  3. Memory
  4. Input Devices
  5. Output Devices
  6. Processing Power
Roles and Responsibilities of project Team
Planning Tools
ERDs, State Transition Diagrams, DFDs and Flowcharts

Resource summary

	Created by edwardmatthews47 over 10 years ago