System Development
System development creates or modifies information systems through analysis, design, implementation, and maintenance.
Systems Analysis
Studies existing systems and defines requirements. Techniques: interviews, observation, JAD sessions.
Systems Design
Logical design (what) and physical design (how). Decisions: build vs buy, centralised vs distributed.
Development Approaches
SDLC, prototyping, RAD, end-user development, outsourcing.
Implementation
Coding, testing, data conversion, training, changeover (parallel, direct, pilot, phased).
Cost-Benefit Analysis
Tangible and intangible benefits. ROI, NPV, payback period measure viability.
Summary
Systematic development processes enable building IS that delivers business value.