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About Relational Databases
Every organization has information that it must store and manage to meet
its requirements. For example, a corporation must collect and maintain
human resources records for its employees. This information must be
available to those who need it. An information system is a formal
system for storing and processing information.
每个组织都有其必须存储和管理的信息,以满足其需求。 例如, 公司必须收
集和维护其雇员的人力资源纪录。 此信息对需要它的人必须是可用的。 信
息系统是一个正式的系统,用于存储和处理信息。
An information system could be a set of cardboard boxes containing
manila folders along with rules for how to store and retrieve the folders.
However, most companies today use a database to automate their
information systems. A database is an organized collection of information
treated as a unit. The purpose of a database is to collect, store, and
retrieve related information for use by database applications.
信息系统可能是一组文件柜, 其中包含许多文件夹,以及如何存储和检索文
件夹的规则。 但是,大多数公司现在使用数据库来自动化其信息系统。 数
据库是信息的一个有组织的集合, 被作为一个整体来看待。 数据库的目的是
收集、 存储、和检索相关的信息, 以供数据库应用程序使用。
Database Management System (DBMS)
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