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Business data communications and networking 10th edition pdf


business data communications and networking 10th edition pdf

There are literally dozens of standards for middleware, each of which is supported by different vendors, and each of which provides different functions.
Some types of computers and operating systems are better suited to different tasks (e.g., transaction processing, real-time video, mathematical processing).
The microcomputer revolution changed this.
In theory, there are economies of scale, because all computer resources are centralized.
The first is data storage.As more companies gain experience with client-server applications, as new products are developed and refined, and as standards mature, these costs probably will decrease.In business economics and master's degree in business economics from the Claremont Graduate School, an MBA from the University of Santa Clara, and.A.Most application programs require data to be stored and retrieved, whether it is a small file (such as a memo produced by a word processor) or a large database (such as an organization's accounting records).He has written numerous books on data communication, system design, and networking, and he is the publisher of MIS Quarterly, a scholarly quarterly lodged in the Information Systems department at Indiana University.In contrast, managers could buy microcomputer packages or develop microcomputer-based applications in a few months.The application software on the client the humanistic tradition book 6 computers is responsible for the presentation logic, the application logic, and the data access logic; the server simply stores the data (see Figure 3-2).



If the files are very large, they may also overwhelm the power of the client computers.
Hosts became somewhat less overloaded, but the network became more complex: developing applications was more difficult, and there were more points of failure.
Although this is not conceptually difficult, it can be an administrative nightmare.
Application software is developed and stored on one computer and all data are on the same computer.
In the late 1980s, many large organizations had application development backlogs of two to three years.Client-server architectures attempt to balance the processing between the client and the server by having both do some of the logic.This simple architecture often works very well.In industrial engineering from Michigan State University.In the late 1970s and early 1980s, intelligent terminals were developed that could perform some of the presentation function (intelligent terminals are discussed in more detail in the next section).Middleware does two things.Client-server architectures have some important benefits compared to host-based architectures.The clients (usually terminals) enabled users to send and receive messages to and from the host computer.


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