Content

1. Overview
   1. Main Enemies to Software Success
2. Software Process
   1. Software Development Process Models
      1. Waterfall

Overview

Software Engineering is the process of solving customers' problems by the systematic development and evolution of large, high-quality software systems within cost, time and other constraints and in the context of constant change.

Main Enemies to Software Success

1. Complexity
   • During development process e.g. collaboration, communication
   • Software itself
2. Change
   • Initial development long, client's needs changed
   • After delivery

Software Process

A set of activities and the way those activities are structured to develop a software product.

• Objective
  • Transform user's needs into software system
• General activities
  • Management activities
  • Technical activities

Software Development Process Models

• What to do next?
• For how long?
• Result produced?

Waterfall

• Lead to badly structured system
  • Workarounds for prematurely frozen designs
• Inflexible
  • Large volume of documents
  • Repeated steps
  • Commitment too early
• Mistake late shown
  • User's cannot see a working program until late
• Works when:
  • Requirements well understood
  • Requirements unlikely to change
  • Risks are low