數(shù)據(jù)庫畢業(yè)設(shè)計(jì)---外文翻譯(存儲(chǔ)版)
【正文】 nk to record the debit and then not deliver the money because the power fails. The proper way to handle this operation is far from obvious and can be regarded as one of the significant achievements in DBMS architecture. Database system changed significantly. Codd proposed that database system should present the user with a view of data anized as tables called relations. Behind the scenes, there might be a plex data structure that allowed rapid response to a variety of queries. But unlike the user of earlier database systems, the user of a relational system would not be concerned with storage structure. Queries could be expressed in a very high level language, which greatly increased the efficiency of database programmers. Relations are tables. Their columns are headed by attributes. Client – Server Architecture Many varieties of modern software use a clientserver architecture, in which requests by one process (the client ) are sent to another process (the server) for execution. Database systems are no exception, and it is mon to divide the work of the ponents shown into a server process and one or more client processes. 學(xué)士畢業(yè)論文 5 In the simplest client/server architecture, the entire DBMS is a server, except for the query interfaces that the user and send queries or other mands across to the server. For example, relational systems generally use the SQL language for representing requests from the client to the server. The database server then sends the answer, in the form of a table or relation, back to client. The relationship between client and server can get more plex, especially when answers are extremely large. We shall have more to say about this matter in section . there is also a trend to put more work in the client, since the server will be a bottleneck if there are many simultaneous database users. 學(xué)士畢業(yè)論文 6 附錄 B: 外文資料翻譯－譯 文 部分： 客戶目標(biāo)： 最早判斷發(fā)展可收益卡的成功性是在于受市場(chǎng)影響的被吸引的申請(qǐng)人的質(zhì)量。學(xué)士畢業(yè)論文 1 附 錄 附錄 A: 外文資料翻譯－原文部分： CUSTOMER TARGETTING The earliest determinant of success in the development of a profitable card scheme will lie in the quality of applicants that are attracted by the marketing effort. Not only must there be sufficient creditworthy applicants to avoid fruitless and expensive application processing, but it is critical t
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