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Amarco case study: An Enterprise-Wide Information System
| Purpose of this case study |
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Demonstrate how Amarco gets the global view of a complex existing
information system |
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Demonstrate the expression power of the Amarco's concepts and tools in
presenting the information. This presentation helps understand and specify the change
requirements. |
| A one billion $ Company, a France Telecom subsidiary, needed
a better global view of its whole information system, that spans various technologies
(IBM, UNIX and others). We choose to integrate in this global view all the information
exchanges, computerized or not. All these objects were first
defined in Amarco Repository tool. They were drawn afterwards
automatically by Amarco Cartography tool.
The processes can be animated with
Amarco
Mobile.
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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.
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Overview
