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The ASx authorization server is designed to support the computing
environment policies of the customer and does not impose any policies of its own.
As such, the server provides the highest possible level of portability, being able
to support all realistically conceivable configurations of hardware, operating system
and relational database (RDBMS). That is achieved through the use of a standards-based
design that ensures that clearly defined interfaces are used to access all resources,
whether they be internal or external. This result is a layered software architecture
which is further enhanced by the use of object oriented design techniques. These
layers are individually replaceable, enabling access to alternative operating systems,
databases, transaction protection solutions, devices, networks etc without requiring
modifications to the whole of the product since standard interfaces are provided
for each resource category.
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ASx uses a database for data storage and audit logging. ASx provides
interfaces to Oracle, Microsoft SQL, Sybase and DB2 databases.
ASx operates as a distributed system across clusters without
requiring further development and with the minimum of configuration being necessary.
Consequently, components of the system may operate on another machine for improved
performance or redundancy. The various machines (nodes) forming the complete system
may be of different hardware types, and even execute with different operating systems.
ASx supports a range of peripheral devices and applications such as hardware security
modules (HSM), fraud control systems and other host applications.
ASx supports most commonly used industry standard message and communication protocols.
The underlying computer architecture upon which ASx is deployed may be scaled transparently
to ASx either vertically (replacing with a more powerful computer) or horizontally
(adding more computers to the cluster).
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