In today’s connected world, the role of system integration engineers is becoming more and more important: more and more systems are designed to connect together, both within the system under construction and to systems that are already deployed.
Master Concept system integration engineers have a broad range of skills and is likely to be defined by a breadth of knowledge rather than a depth of knowledge.
These skills include software and hardware engineering, interface protocols, and general problem solving skills. It is likely that the problems to be solved have not been solved before except in the broadest sense. They are likely to include new and challenging problems with an input from a broad range of engineers where the System Integration engineer 'pulls it all together'.
Methods of integration
Service-Oriented Architecture
Master Concept helps companies who have long sought to integrate existing systems in order to implement information technology (IT) support for business processes that cover all present and prospective systems requirements needed to run the business end-to-end. A variety of designs can be used to this end, ranging from rigid point-to-point electronic data interchange (EDI) interactions to web auctions. By updating older technologies, such as Internet-enabling EDI-based systems, companies can make their IT systems available to internal or external customers; but the resulting systems have not proven to be flexible enough to meet business demands. A flexible, standardized architecture is required to better support the connection of various applications and the sharing of data. SOA is one such architecture. It unifies business processes by structuring large applications as an ad hoc collection of smaller modules called services. These applications can be used by different groups of people both inside and outside the company, and new applications built from a mix of services from the global pool exhibit greater flexibility and uniformity. One should not, for example, have to provide redundantly the same personal information to open an online checking, savings or IRA account, and further, the interfaces one interacts with should have the same look and feel and use the same level and type of input data validation. Building all applications from the same pool of services makes achieving this goal much easier and more deployable to affiliate companies. An example of this might be interacting with a rental car company's reservation system even though you are doing so from an airline's reservation system.
Master Concept use Service Oriented Architecture (SOA) open standard approach as a design framework for realizing rapid and low-cost system development and improving total system quality. SOA uses the Web services standards and technologies and is rapidly becoming a standard approach for enterprise information systems. Web services face significant challenges because of particular requirements. There are many problems that are to be addressed when applying the SOA paradigm to a real-time system, which include response time, support of event-driven, asynchronous parallel applications, complicated human interface support, reliability, etc
Horizontal Integration or Enterprise service bus
It is another method in which a specialized subsystem (BUS) is added to the system which is dedicated to communicate with other subsystems. This allows cutting the number of connections (interfaces) to only one per subsystem which will connect directly to the BUS. The BUS is capable to translate the interface into another interface. This allows cutting the costs of integration and provides extreme flexibility. With systems integrated with this method, it is possible to completely replace one subsystem with another subsystem which provides similar functionality but exports different interfaces, all this completely transparent for the rest of the subsystems. The only required thing is to implement the new interface between the BUS and the new subsystem.
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转载于:https://www.cnblogs.com/hkmci/archive/2010/12/03/1895188.html