PROJECT MANAGEMENT is a set of principles, practices, and
techniques applied to lead project teams and control project
schedule, cost, and performance risks to result in delighted
customers.

(Let me know various answers for this questions plzz)

Project Management is nothing but a Organizing and planning 
and scheduling software Project
-Delevered on time
-Software needed

Neede for Project Management is,
-Project Planning
-project Scheduling 
-Project Costing
-Monitoring Reviews
-Report Writing and Presentation

Manually it is Documented and Automated it is Microsoft 
Project Planner(MPP)

the above said answer of correct to there contents .but 
remember one thing if your a project manger then only you 
need to think about this or else it not out business