System development life cycle

The document discusses the system development life cycle (SDLC), which is a process for understanding how information systems can support business needs through designing, building, and delivering a system to users in a systematic way. It describes the typical phases of the SDLC process, including planning, analysis, design/development, implementation, and operation/support. Two common models for the SDLC process are discussed: the waterfall model, which is a linear sequential process, and the spiral model, which combines design and prototyping in stages with risk assessment checkpoints.