That's certainly true. This is the conventional view, which is closely linked to the "magic triangle" of project management. However, stakeholder satisfaction must also be taken into account. Within stakeholder management, identifying and communicating with key stakeholders must also be part of project planning.

You plan a project to reflect the defined resources/Quality, to be completed within the defined Time and to ensure it is within the defined cost.

This is very true and immediately cost, time and resources are defined, then all other project management tools can roll in to action like scheduling tools, CBA and all other project planning techniques. also this will spin the project cycle rolling in to place where project formulation, appraisal, implementation and evaluation are activated! Finally, these three constraints are the basis in defining project.

At first, goals of project must be identified, the project expected age, and the annual objectives quantitatively.

Thank you every for responding

The project life cycle is viewed from Four stage

Initiation stage

Planning stage

Execution Stage

Closure stage