数据库实用教程答案(第三版)

　　第1、2章

　　1.1　名词解释：

　　◆ DB：数据库（Database),DB是统一管理的相关数据的集合。DB能为各种用户共享，具有最小冗余度，数据间联系密切，而又有较高的数据独立性。

　　◆ DBMS：数据库管理系统（Database Management System)，DBMS是位于用户与操作系统之间的一层数据管理软件，为用户或应用程序提供访问DB的方法，包括DB的建立、查询、更新及各种数据控制。DBMS总是基于某种数据模型，可以分为层次型、网状型、关系型、面向对象型DBMS。-Database of practical tutorials answer (third edition)

Chapters 1 and 2

1.1 Glossary:

◆ DB: database (Database), DB is a collection of unified management of data. DB can be shared for a variety of users with minimal redundancy, the data closely and have a higher data independence.

◆ the DBMS: database management system (Database Management System), the DBMS is located in the layer between the user and operating system data management software, provides access to the DB for the user or application, including the establishment of the DB, query, update, and a variety of data control. DBMS is always based on a data model, can be divided into hierarchical, network, relational, object-oriented, the DBMS.