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Comparison of CORBA and Web Services - Essay Example

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The purpose of the paper "Comparison of CORBA and Web Services" is to take a closer look at the different technologies that are available today - a successful transformation of the Wells Fargo Bank may help us to comprehend different infrastructures and especially the CORBA and its comparison to Web Services. …
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Comparison of CORBA and Web Services
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Download file to see previous pages Other "presentation tier" implementations include the Wells Fargo Phone-Bank, which provides banking services via an Interactive Voice Response system. Applications implementing the view are called "Channels" in Wells Fargo terminology. Not unlike the evolution of the commercial Internet, the Wells Fargo system has grown from very humble beginnings (2000 remote calls per month) to much more impressive volumes (Khan & Zheng, 2004).
At peak, the systems support tens of thousands of users and process thousands of requests per second. These volumes need to be supported in an environment that has no tolerance for downtime. The "database tier" is implemented almost entirely by mainframes and similar types of systems, which remain dominant in the financial services industry. There are also some very large RDBMS systems implementing less significant aspects of the model (Khan & Zheng, 2004).
To a large extent, the business logic is implemented in the middle tier. Consequently, it can be shared by the different channels of Wells Fargo Bank. The obvious benefit of this design is that business logic does not have to be implemented multiple times for different channels. It is not entirely possible to implement business logic in the middle-tier only once, because of differences in requirements. Business proponents of the different channel applications sometimes represent different interest groups or legal positions and do not always succeed in identifying one set of requirements (Khan & Zheng, 2004).
The middle-tier provides a polymorphic view of the data stored by a very diverse set of backend systems. This is one of the most important and successful features of this component. Channel applications can represent account information in a consistent manner, representing many products such as savings accounts, loans (including mortgages), credit cards, and even stock portfolios. This feature allows bank customers to view account information from their personalized home page on the Wells Fargo Internet in addition to performing various self-service features such as money transfers (Khan & Zheng, 2004). ...Download file to see next pagesRead More
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