An overview of the systems analysis and design process, its importance in developing information systems, and the role of a systems analyst.
Introduction to Systems Analysis and Design
Key concepts, phases, tools, and best practices
| Aspect | Definition |
|---|---|
| Systems Analysis | The systematic study of a business problem or opportunity to identify requirements and determine the most effective solution. |
| Systems Design | The process of specifying how the solution will be built, including architecture, data structures, interfaces, and processes. |
| Goal | Deliver information systems that meet user needs, are cost‑effective, reliable, and adaptable to change. |
| Phase | Primary Activities | Typical Deliverables |
|---|---|---|
| 1. Planning | • Define project scope & objectives • Conduct feasibility studies (technical, economic, operational, legal, schedule) • Create project charter |
Feasibility report, project charter, high‑level schedule |
| 2. Analysis | • Gather detailed requirements (interviews, questionnaires, observation) • Model current processes (As‑Is) • Identify problems & opportunities |
Requirements Specification (SRS), process models, data flow diagrams |
| 3. Design | • Translate requirements into system specifications • Design logical & physical data models • Define UI/UX, system architecture, security, and interfaces |
Design Specification (DSD), ER diagrams, UI mock‑ups, prototype |
| 4. Implementation (Construction) | • Code modules, develop databases, configure hardware • Conduct unit and integration testing |
Source code, test scripts, compiled builds |
| 5. Testing | • Perform system, acceptance, performance, and security testing • Validate against requirements |
Test reports, defect logs, user acceptance sign‑off |
| 6. Deployment | • Install system in production environment • Migrate data, train users, establish support procedures |
Deployment plan, training materials, go‑live checklist |
| 7. Maintenance | • Monitor performance, fix bugs, add enhancements • Conduct periodic reviews |
Maintenance logs, change requests, updated documentation |
Iterative & agile variants compress or repeat these phases to accommodate rapid feedback.
Requirements Elicitation
Requirements Documentation
Modeling Business Processes
Feasibility Analysis
| Design Aspect | Focus | Typical Artifacts |
|---|---|---|
| Architectural Design | Overall structure (client‑server, web‑based, microservices) | Architecture diagram, technology stack |