SDLC (Software Development Life Cycle) and PMLC (Project Management Life Cycle) are both frameworks that provide a structured approach to managing software development projects, but they focus on different aspects of the project.

SDLC is a framework that describes the various stages involved in developing software from start to finish. These stages typically include requirements gathering, design, development, testing, deployment, and maintenance. The main objective of SDLC is to ensure that software is developed in a systematic and structured manner, with each stage building on the work completed in the previous stage. The ultimate goal is to ensure that the software meets the requirements of the users and stakeholders and is delivered on time, within budget, and to the required quality standards.

PMLC, on the other hand, is a broader framework that encompasses the entire life cycle of a project, not just the software development phase. It covers all aspects of project management, from project initiation to project closure. PMLC typically includes stages such as project planning, execution, monitoring and control, and closure. The main objective of PMLC is to ensure that the project is delivered on time, within budget, and to the satisfaction of the stakeholders. PMLC is not specific to software development projects and can be applied to any type of project.

In summary, SDLC is a framework that specifically focuses on the software development life cycle, while PMLC is a broader framework that encompasses all aspects of project management, including software development.