Unit 476: System Analysis and Design

1. Introduction to System Analysis and Design

• Definition and scope of system analysis and design
• Importance of understanding business requirements
• Identifying organizational problems
• Proposing effective system solutions

2. System Development Life Cycle (SDLC)

• Overview of SDLC phases:
  • Planning
  • Analysis
  • Design
  • Implementation
  • Maintenance
• Role and significance of each phase
• Iterative and waterfall models

3. Requirement Gathering Techniques

• Importance of clear and accurate requirements
• Techniques:
  • Interviews: types, preparation, execution
  • Questionnaires: design and distribution
  • Observation: direct and indirect
  • Prototyping: benefits and limitations
• Documenting requirements

4. Data Modeling and Database Design

• Introduction to data modeling
• Entity-Relationship (ER) diagrams:
  • Entities, attributes, relationships
  • Cardinality and participation
• Normalization:
  • Purpose and process
  • Normal forms (1NF, 2NF, 3NF)
• Designing efficient databases for systems

5. System Design Methods

• Overview of system design approaches
• Structured Analysis:
  • Data flow diagrams (DFDs)
  • Process modeling
• Object-Oriented Analysis:
  • Classes and objects
  • Use case diagrams
• Agile Development:
  • Principles and practices
  • Iterative design and flexibility
• Selecting appropriate design methods

6. User Interface Design

• Importance of user-friendly interfaces
• Usability principles:
  • Consistency
  • Feedback
  • Simplicity
  • Accessibility
• Interface elements:
  • Menus, buttons, forms
  • Navigation structures
• Design best practices and guidelines

7. System Testing and Quality Assurance

• Purpose of testing in system development
• Types of testing:
  • Unit testing
  • Integration testing
  • System testing
  • Acceptance testing
• Quality assurance techniques:
  • Reviews and inspections
  • Test planning and documentation
• Ensuring compliance with requirements and standards

8. Implementation and Deployment

• Steps in system implementation:
  • Installation
  • Training users
  • Data conversion and migration
  • User acceptance testing (UAT)
• Deployment strategies
• Managing change and transition

9. System Maintenance and Support

• Importance of maintenance post-implementation
• Types of maintenance:
  • Corrective (bug fixing)
  • Adaptive (environment changes)
  • Perfective (enhancements)
  • Preventive
• User support and feedback mechanisms
• Ensuring system longevity and alignment with business goals