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1、第四讲 数据库软件（Database Software）泸州职业技术学院信息工程系 2/10/20231软件专业英语教学目的与要求教学重点和难点n教学目的与要求：n1、掌握有关数据库软件的专业术语n2、了解数据库软件的概况n3、了解数据库软件市场的盈利方式n4、了解数据库软件的发展趋势n教学重点和难点：n1、数据库软件的相关术语n2、数据库软件的概况、盈利方式和发展趋势2/10/20232软件专业英语一、解释术语 术语术语含义含义术语术语含义含义Database Software数据库软件Field字段Flat File Database平面文件数据库Relational Database关系
2、数据库SQL结构化查询语言DBMS数据库管理系统Database Customization数据库定制Database Security数据库安全2/10/20233软件专业英语二、讲解课文 n第一段：数据库软件概述第一段：数据库软件概述nDatabase software stores and recalls information in fields in a systematic and organized way.It is like putting many boxes of files in apartments in an apartment building,each one
3、has a specific address.When you want to go back later and retrieve the information,you just need to remember the address for the apartment you put it in.The main kinds are relational and flat file.The basic difference is that relational databases allow more complicated linking and display of data.Th
4、ey have a master file where information is entered,if the data in the master file changes it is updated throughout the whole database system automatically.In flat file database,linking and display of information in fields can only be done by special programming.2/10/20234软件专业英语二、讲解课文n第二段：数据库软件市场如何盈利
5、第二段：数据库软件市场如何盈利nMoney is made on the sale or rental of database software licenses,and on the development and customization of databases for use in specific businesses.For many businesses,their database is the heart of their operation.For example,in insurance and banking,the numbers and names in thei
6、r database are their business.Without these,they have no business.The current state of the industry is that database software is usually hosted on a server on a corporate network or the Internet.Information is requested or queried by clients to the server,and sent back for display on the local monit
7、or or screen.In systems like this,SQL(Structured Query Language)statements are usually sent to a DBMS(Database Management System)application that then retrieves the information and sends it back to whatever made the request.2/10/20235软件专业英语二、讲解课文n第三段：数据库软件的发展趋势第三段：数据库软件的发展趋势nRecent trends in the ind
8、ustry include the movement to databases that can be accessed over the Internet,and database systems that can be accessed by many different clients,for example,PDAs and mobile phones.These systems have to have a high level of security.Speed is also an issue,some database systems do well when there is
9、 not much information in them,but get much slower when their fields are full of data.So there is a strong trend to make database systems reply to queries fast.2/10/20236软件专业英语三、替代练习n软件英语基础教程P21-222/10/20237软件专业英语四、句子翻译练习nDont remind me.|别跟我说起了。nDont talk to me about that fellow.|别跟我谈起那个家伙。nI wouldnt hear of it.|别跟我再说这事了。nDont be afraid，Ill help you.|别害怕，我会帮助你。nCome off it,tell me the truth!|别胡扯了，把实话告诉我!nNot at all.|别客气。nJust dont do that,thats all.|别那么干，就是这样!nLets forget it.|别去想它了。nDont let that worry you.|别让那事折磨你了。nDont let me down.|别让我失望。2/10/20238软件专业英语