Summary

This is the end of lesson 12. In this lesson, we have learned :

	Overview of system implementation
	Coding
	Testing
	Installation
	Documenting the system
	Training

In the next lesson, we will discuss final phase system development life cycle; system maintenance. System operation is the ongoing function in which the system operates until it's replaced with a new system. System maintenance involves servicing, maintaining and improving functional information system through its lifetime.