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Unit 7: Applications Cases of Integration

This architecture provides sufficient high-level consistency for interoperability and a certain notes
degree of local freedom.

Example: The architecture supports semantic diversity (different interpretations of the
same data) and permits use of diverse technical tools and techniques. It also provides the basis
for organizational responsibility and ownership of each layer. For example, business data persists
at the application component layer and not in the middleware/EAI layer. Hence, this data is the
responsibility of the application owners and not the middleware solution developers.
7.2 purpose of eai

The purposes of EAI are:
1. Ensure that Data (information) in multiple systems is kept consistent. This is also known as
EII (Enterprise Information Integration).

2. Business Process are integrated and linked across applications.
3. Business policies or rules from applications are abstracted. So a change in vendor shouldn’t
warrant rebuilding the application from scratch.

4. It provides a single unified consistent access interface to various applications.



Case Study case 1: Business case introduction

oyal Wallace, a UK-based transportation company, is a global leader in the rail
equipment and servicing industry. Its wide-range of products includes passenger
Rrail vehicles and total transit systems. It also manufactures locomotives, freight cars,
bogies, and provides rail-control solutions.
Because of the structure of its business, the Royal Wallace company has a presence in several
countries across Europe and in North America, including the USA and Canada. And, each of
these country-specific sites has its own dedicated legacy system such as SAP-based systems
in UK and Germany, Oracle financials in Canada, and so on (see Figure 1).

figure 1: as-is scenario

Contd...

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