This is a component of the more general quality of flexibility. It can be defined as the productivity needed to incorporate a new feature into an existing system expressed as a percentage of the normal productivity when developing the software from scratch.

Maintainability can be seen from two different perspectives. The user will be concerned with the elapsed time between a fault s being detected and its being corrected, while the programming management will be concerned about the effort involved.

The original IOE maintenance billing system comprised 5000 SLOC and took 400 work-days to implement. An amendment to the core system caused by the

Case Study Example introduction of group accounts has lead to 100 SLOC being added which took 20 work-days to implement, thus:

productivity for the original system = 5000/400

= 12.5 SLOC/staflf day productivity for the amendment = 100/20

= 5 SLOC/staff day extcndibility = 5/12.5 x 100

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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