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dbms简介--外文翻译(附带原文),论文外文翻译,附带原文《dbms简介》,《introduction to dbms》dbms简介数据库管理系统是编程系统中的重要的一种,现今可以用在最大以及最小的电脑上。其他重要形式的系统软件,比如汇编以及操作系统,近些年来开发出一系列容易理解的数据库管理系统原则,并且这些概念既有助于理解如何有效利用系统,以可以帮助设...
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论文外文翻译,附带原文《DBMS简介》,《Introduction to DBMS》

DBMS简介
数据库管理系统是编程系统中的重要的一种,现今可以用在最大以及最小的电脑上。其他重要
形式的系统软件,比如汇编以及操作系统,近些年来开发出一系列容易理解的数据库管理系统原则
,并且这些概念既有助于理解如何有效利用系统,以可以帮助设计和执行DBMS系统。DBMS是一
程序的集合,它使你能够存储、修改以及从数据库中提了提取信息。有很多种不同类型的DBMS
系统,从运行在个人电脑上的小型系统到运行在大型主机上的巨型系统。
DBMS的功能
有两种功能使数据库区别于其他设计系统:
管理固有数据的能力,以及
高效访问大量数据的能力
第一点只是表明现有一个固定存在的数据库,而这些数据库的内容也就是DBMS所要访问和管
理的那些数据。第二点将DBMS和同样能管理固有数据的文件系统区分开来。通常在数据非常大的
时候还需要用到DBMS系统的功能,因为对于小量数据而言,简单的访问技术如对数据的线性扫
就足够了。

Introduction to DBMS
A database management system (DBMS) is an important type of programming system, used today on the biggest and the smallest computers As for other major forms of system software, such as compilers and operating systems, a well-understood set of principles for database management systems has developed over the years, and these concepts are useful both for understanding how to use these systems effectively and for designing and implementing DBMS is a collection of programs that enables you to store, modify, and extract information from a database.. There are different types of DBMS, ranging from small systems that run on personal computers to huge systems that run on mainframes. The following are the location of database between application programs and end-users.
There are two qualities that distinguish database management systems form other sores of programming systems.
1) The ability to manage persistent data
2) The ability to access large amounts of data efficiently.
Point 1) merely states that there is a database, which exists permanently; the contents of this database the data that a DBMS accesses and manage. Point 2) distinguishes a DBMS from a file system, which also manages persistent data.
A DBMS is capabilities are needed most when the amount of data is very large, because for small amounts of data, simple access techniques, such as linear scans of the data, are usually adequate.
While we regard the above two properties of a DBMS as fundament, there are a number of other capabilities that are almost universally found in commercial DBMS. These are: