Notice the management is a wrapper around the construction which means it facilitates the construction so it can go smoothly.

Quality Focus: Focus on quality.
Processes: Defining the tasks and their orders in which they will be performed.
Methods: The techniques to perform the tasks, the answers to "how to".
Tools: To automate or semi-automate some portions of the development.

1. Problem is defined. 2. Solution is being built. 3. There might be some portions of problem which can be solved by already present solutions so try to integrate those into your system. 4. Once deployed, it is in status quo, which means now once the user requests some changes, the loop begins again.

Software Engineering Phases

Vision: Why are we doing this and what are our objectives.
Definition: Defining the activities and things need to be done.
Development: Determining the design of the system, such as how to build it and how to test it afterwards etc.
Maintenance: Most important, controlling the changes to be introduced which can be in terms of enhancements or defect removal.