System integration


System integration

System integration is the bringing together of the component subsystems into one system and ensuring that the subsystems function together as a system. In information technology, systems integration is the process of linking together different computing systems and software applications physically or functionally. [ [http://www2.cis.gsu.edu/cis/program/syllabus/graduate/CIS8020.asp Systems Integration Course Syllabus] , Georgia State University, webpage, retrieved June 27, 2007] The system integrator brings together discrete systems utilizing a variety of techniques such as computer networking, enterprise application integration, business process management or manual programming. A system is an aggregation of subsystems cooperating so that the system is able to deliver the over-arching functionality. System integration involves integrating existing (often disparate) subsystems. The subsystems will have interfaces. Integration involves joining the subsystems together by “gluing” their interfaces together. If the interfaces don’t directly interlock, the “glue” between them can provide the required mappings. System integration is about determining the required “glue”. System integration is also about value-adding to the system, capabilities that are possible because of interactions between subsystems.

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.

Required skills

A system integration engineer needs a broad range of skills and is likely to be defined by a breadth of knowledge rather than a depth of knowledge.

These skills are likely to 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

Vertical Integration is process of integrating subsystems according to their functionality by creating functional entities also referred to as silos. The benefit of this method is that the integration is performed fast and with involving only the necessary vendors, therefore, this method is cheaper in short term. On the other hand, cost-of-ownership can be substantially higher than seen in other methods, since in case of new or enhanced functionality, the only possible way to implement (scale the system) would be by implementing another silo. Reusing subsystems to create another functionality is not possible.

Star Integration or also known as Spaghetti Integration is process of integration of the systems where each system is interconnected to each of the remaining subsystems. When observed from the perspective of the subsystem which is being integrated, this reminds of a star, but when the overall diagram of the system is presented, the connections look like spaghetti, therefore the name of this method. The cost of this method of integration can vary from the interfaces which subsystems are exporting. In case in which the subsystems are exporting vendor-specific interfaces, the integration cost can substantially rise. Time and costs needed to integrate the systems is exponentially rising by adding additional subsystems. From the perspective of implementing new features, this method is preferable since provides extreme flexibility to reuse the functionalities from existing subsystem into new system.

Horizontal Integration or Enterprise service bus is a 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..

ee also

Enterprise application integration

External links

* [http://www.sharpy.dircon.co.uk/ System Integration Information]
* [http://www2.cis.gsu.edu/cis/program/syllabus/graduate/CIS8020.asp Systems Integration Course Syllabus]

Notes


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • system integration — See social integration and system integration …   Dictionary of sociology

  • System integration testing — (SIT), in the context of software systems and software engineering, is a testing process that exercises a software system s coexistence with others. System integration testing takes multiple integrated systems that have passed system testing as… …   Wikipedia

  • System Integration & Technology Distribution AG — S T System Integration Technology Distribution AG Unternehmensform AG ISIN AT0000905351 Gründung 1993 …   Deutsch Wikipedia

  • System integration (of new technologies) —   The successful integration of a new technology into the electric utility system by analyzing the technology s system effects and resolving any negative impacts that might result from its broader use.   California Energy Comission. Dictionary of …   Energy terms

  • social integration and system integration — These terms were first coined by the British sociologist David Lockwood, in order to indicate what he saw as fundamental problems in both the normative functionalist theories of the 1950s, and the conflict theories of writers such as Ralf… …   Dictionary of sociology

  • Open Architecture System Integration Strategy — In the late 1980s, Apple Computer was increasingly worried about the legion of graphical user interfaces about to be released that would compete with the Mac OS. In addition to improved versions of Microsoft Windows, which had previously been… …   Wikipedia

  • Integration — is a process of combining or accumulating. It may specifically refer to:*The bringing together of two or more economies, cultures, religions (usually called syncretism), etc.;in sociology and economy *Social integration *Racial integration,… …   Wikipedia

  • System integrator — A system integrator is a person or company that specializes in bringing together component subsystems into a whole and ensuring that those subsystems function together, a practice known as System Integration. System integrators may work in many… …   Wikipedia

  • Integration Competency Center — The Integration Competency Center (ICC), sometimes referred to as an Integration Center of Expertise (COE), is a shared service function within an organization, particularly large corporate enterprises as well as public sector institutions, for… …   Wikipedia

  • integration — noun ADJECTIVE ▪ true ▪ complete, full ▪ close, seamless ▪ further, greater, increased …   Collocations dictionary


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.