The RiskTec Computing Environment: A Client/Server Architecture

Xtremes is embedded in the CORBA-based client/server architecture RiskTec that is shown in
the subsequent figure. The central part of the architecture is a component factory (implemented as
a part of the Xtremes executable) that produces statistical components to be used by clients.

Arrows point from server to client, whereby solid lines indicate CORBA-based connections.

One client is the XGPL system which allows a visual combination of the components by using a
graphical programming language (see the next section for more information). The second client is a
DLL that encapsulates the CORBA-based components with a procedural interface. Such an
interface can be accessed from MS Excel or other systems capable of including DLLs.

There are two predefined servers in the statistical environment. The first one is the Xtremes system,
which exports estimators, data generation routines and plotting facilities. The second one is the
command line version of StatPascal with which new components can be written easily.

Because the interface definitions of the components and the component factory are open to the user,
it is possible to implement further CORBA-based clients and servers. The draft of the RiskTec manual
provides further information.