Amarco case study: An
Enterprise-Wide Information System
of this case study
||Demonstrate how Amarco gets the global view of a
complex existing information system
||Demonstrate the expression power of the Amarco's
concepts and tools in presenting the information. This presentation
helps understand and specify the change requirements.
The external architecture puts boundaries around the system. So we could
better see what was outside,
and which were the services
that the Information system exchanged with the external partners.
The internal architecture shows the components, as they are seen today
(quite a challenge for Amarco Cartography!). The service points seen from
the exterior are now mapped on internal objects.
We can display only the connections relative to an object. It is clear
what service points (interfaces) are to be respected if we proceed to a
replacement (technology change, for example).
To help understand the system, we reorganized it (virtually). This was
done by assembling some of the contained objects in higher objects. The
picture is more simple, that is, easier to understand. There is no real
intervention on the system itself.
The system may be represented also by taking into account the various
information technologies that are present in its structure. The service
points are scattered on various technology -oriented infrastructures. Thus
we can see the various exchanges that take place between technology
environments. A more detailed view may show the effective communication
links, with service points like TCP/IP, X25, SNA etc.
If we take into account one of the new objects, we can present its
external architecture, with all its neighbors.
This object can now be displayed with the component parts that were
chosen to be assembled.