Software Engineering for Students A Programming Approach

The transition phase
Summary 343
This phase means putting the system into use. It involves installing the ATM hardware,
the software and communication lines. It means arranging for the ATMs to be serviced,
supplied with cash and printer paper. It means installing the server software.
Rather than install a whole number of ATMs at once, it makes sense to install just
one in some convenient location to act as a beta test. This first iteration, once successfully
concluded, is followed by the installation of multiple ATMs.
27.7 ● Discussion
The UP is not a single process model. It is a framework from which a project manager
can select a process model suitable for a particular project. So the model can be applied
to large and small projects, involving a few developers or many.
Summary
The UP is a process model that primarily aims to:
■ meet user requirements
■ accommodate risks.
The process consists of four phases:
1. inception
2. elaboration
3. construction
4. transition.
Each phase consists of one or more iterations. Each iteration consists of analysis,
design, coding and testing. The purpose of iteration is to accommodate risks.
The UP employs a number of techniques:
■ iteration
■ use cases
■ focus on providing executable code
■ establishing a working architecture early on
■ using components
■ establishing an effective team
■ incorporating quality throughout.