英语文献翻译网上商城java.doc

时间：2019-05-15

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毕业设计(论文)外文翻译

Java and the

If Java is, in fact, yet puter programming language, you may question why it is so important and why it is being promoted as a revolutionary step puter programming. The answer isn’t immediately obvious if you’ing from a traditional programming perspective. Although Java is very useful for solving traditional standalone programming problems, it is also important because it will solve programming problems on the World Wide Web.

What is the Web?

The Web can seem a bit of a mystery at first, with all this talk of “surfing,”“presence,” and “home pages.” It’s helpful to step back and see what it really is, but to do this you must understand client/server systems, another aspect puting that’s full of confusing issues.

1.Client/puting

The primary idea of a client/server system is that you have a central repository of information—some kind of data, often in a database—that you want to distribute on demand to some set of people or machines. A key to the client/server concept is that the repository of information is centrally located so that it can be changed and so that those changes will propagate out to the information consumers. Taken together, the information repository, the software that distributes the information, and the machine(s) where the information and software reside is called the server. The software that resides on the remote machine, communicates with the server, fetches the information, processes it, and then displays it on the remote machine is called the

client.

The basic concept of client/puting, then, is not plicated. The problems arise because you have a single server trying to serve many clients at once. Generally, a database management system is involved, so the designer “balances” the layout of data into tables for optimal use. In addition, systems often allow a client to insert new information into a server. This me