Define the SDLC?

The systems development life cycle(SDLC) is the process of understanding how an information system(is) can support business needs ,designing the system, building it, delivering it to users.

SDLC process is a "silver bullet" that will keep you form is failures.

The SDLC has four fundamental phases

Which are,

1. Planning
2. Analysis
3. Design
4. Implementation    

Different project ways follow the SDLC phases in different ways.

All projects have elements of these four phases.

Each phases is itself composed of a series of steps.