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If a software application is assembled from
components, then it should be easy to reconfigure
the components to support desired changes
in the business process. Business processes
may be improved in three ways:
| Simplification |
Removing one or more steps from an
unnecessarily complicated process, or
reducing unnecessary variety in the
process. |
This can often by done
by replacing components to produce stepwise
improvements. |
| Integration |
Joining two or more previously unconnected
or uncoordinated processes into a larger
coordinated process |
This can often by done
by inserting additional components to
create new links. |
| Transformation |
Creating a radically new process. |
Disassembling the components,
and putting them back together in a
new way, can often achieve this. |
Improving the software application...
ISO 9126 provides a generic definition
of software quality, in terms of six desirable
characteristics. Component Based Development
contributes to each of these.
| Functionality |
Use of pre-existing
components allows faster delivery of
greater functionality. |
| Maintainability |
The modular structure of
a component-based solution allows individual
components to be replaced easily. |
| Usability |
Use of standard components
supports commonality of GUI. CBD also
supports desk-top integration, which
gives the user a single view of heterogeneous
data. |
| Efficiency |
Performance bottlenecks
can be identified, and the need for
performance tuning can then usually
be localized in a small number of performance-critical
components. Components can be internally
optimized to improve performance, without
affecting their specification; components
can be moved between platforms to improve
performance, without affecting the functionality
or usability of the application. |
| Reliability |
Given a formal and complete
specification of a component, the reliability
of a component comes down to the simple
question: does the component provide
a correct and complete implementation
of its specification. The reliability
of the application as a whole is a separate
issue, but is clearly enhanced when
the application is constructed from
reliable components. |
| Portability |
The specification of a
component is platform-independent. So
a component can be quickly rebuilt for
a new platform, without affecting any
other component. (With some tools, this
will often require no alteration to
the internal design, merely a regeneration
of the executable portion.) |
Why stick in the dark ages using antiquated
coding methods when you could have access
to state of the art component technology
that really will save your business money
and improve the desirability of your products
to your customers. Choosing Software Components
will be the best business decision you will
make and will save you a fortune...
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