🍕 Chapter 1 Process Models

Abstract representation of a process

😶Waterfall (plan driven)

💡 Introduce iteration between phases
Waterfall Model

😶V Model (plan driven)

😶Spiral (plan driven)

💡 Focus on process control
❗️ introduce risk analysis so that the software has the opportunity to stop when major risks can’t be ruled out . It reduces loss.

Application

When there is a budget constraint and risk evaluation is important.
Requirements are complex and need evaluation to get clarity.

⭐️Incremental and Iterative Process Model

Details are added in successive iterations, changes and improvements are introduced as needed and incremental releases of software modules maintain user satisfaction and provide important feedback to modules still under development.

⭐️Unified Process Model

💡 Four distinct phases

Inception
Elaboration（细化）
Construction
Transition（过渡）
💡 Characteristics

use-case driven
architecture-centric
risk focused
iterative and incremental

⭐️Model Driven Architecture (MDA) Model

MDA is based on the idea of executable specifications – generating the software from models and components.

⭐️Agile Model

Agile development proposes a framework in which people and team collaboration are considered more important than planning, documentation and other formalities.

❗️ Requirements are never changed!

❗️ Deliver early and deliver often !

💙 Agile methods: Scrum, XP, FDD, DSDM

Scrum : Scrum is a simple framework for effective team collaboration on complex products. It productively and creatively delivers products of the highest possible value.