Software Reuse

Software Reuse

system reuse

reuse complete systems, which may include several application programs

application reuse

reuse by incorporating it without change into others, or developing application families

system reuse

reuse complete systems, which may include several application programs

application reuse

reuse by incorporating it without change into others, or developing application families

component reuse

reuse components of an application

object and function reuse

reuse small-scale software components that implement a single well-defined object

benefit 1

faster development

benefit 2

effective use of specialists

benefit 3

increased dependability

benefit 4

lower development costs

challenge 1

creating, maintaining and using a component library

challenge 2

finding, understanding and adapting reusable components

challenge 3

lack of trust in software written by others

planning factor 1

development schedule for the software

planning factor 2

expected software lifetime

planning factor 3

application domain

benefit of application system reuse 1

more rapid deployment of a reliable system

benefit of application system reuse 2

possible to see what functionality is provided so easier to judge whether they are likely to be suitable

benefit of application system reuse 3

businesses can focus on their core activity without having to devote a lot of resources to develop systems

challenge of application system reuse 1

requirements usually have to be adapted to reflect the functionality of product

challenge of application system reuse 2

the product may be based on assumptions that are practically impossible to change

challenge of application system reuse 3

may be a lack of local expertise to support systems development