What are the five phases of the systems development life cycle (SDLC)?

 The five phases of the systems development life cycle are (1) system definition, (2) requirements analysis, (3) component design, (4) implementation, and (5) system maintenance. Developers in the first SDLC phase, i.e. system definition, use management's statement of the system needs in order to begin to define the new system (for PRIDE, this statement is based on experience with the prototype). The resulting project plan is the input to the second phase, requirements analysis. Here developers identify the particular features and functions of the new system. The output of that phase is a set of approved user requirements, which become the primary input used to design system components. In phase 4, developers implement, test, and install the new system. Over time, users will find errors, mistakes, and problems. They will also develop new requirements. The description of fixes and new requirements is input into a system maintenance phase. The maintenance phase starts the process all over again, which is why the process is considered a cycle.