30 Using BPEL Processes in WebSphere Business Integration Server Foundation - Business Process Integration and Supply Chain Solutions
3.1 Scenario introduction
The code chosen to work with for this redbook was provided to us by the IBM
System House group. This group inside of IBM focuses on engineering sample
customer IT solutions and then uses this sample solution to implement a
real-world scenario of the technology. Implementing and analyzing scenarios
helps improve IBM product quality and technology.
The scenario that we use is called the Private Exchange (which we often
abbreviate as PE), and it models a hypothetical supply chain and the interface
between the supply chain and a parts exchange specific to the supplier.
3.2 Functional component breakdown
While this redbook is mainly interested in the operations of the supplier’s
business process logic, we must also be aware of the overall environment that
this process will function in. As in any organization, a typical IT system will
contain components of various complexities, age, flexibility, and maintainability,
which this environment emulates through the following logical systems.
3.2.1 Enterprise information systems (EIS)
These systems, representing the data inputs to our business processes, can
largely be viewed as existing legacy systems. The need, for our purposes, to
model such systems is so that the business processes we are implementing
have logical, reasonable data to manipulate. Remember that in all instances
these enterprise information systems are self-contained, independently
operational, fully functional systems. They are not dependent on any externally
defined business processes to function. The processes we will define simply tie
together their functionality.
In our example, we will utilize three such services:
EIS1 - The system responsible for the insertion of new items into the supply
EIS2 - The system responsible for item pricing information.
EIS3 - The system responsible for available item quantity information.
EIS1 is the interface for employees inside the supplier’s company to introduce
new items into the supplier’s parts exchange.