【正文】 ishment and use of a large amount of data forms, it is difficult to establish a simulation of realworld data model. And the need for data output statements when they, in turn, would have dispersed the large number of twodimensional data tables. Reuse indexing technology linking the table in order to find all the necessary data, this, in turn, is bound to affect the use of the response speed. Database various databases is currently the most important and the most popular database. Relational database system to support the relational model of database systems, relationships between data model structure, relations operation and integrity constraint set is posed of three parts. Office Access2000 is the Chinese version of one of the ponents. Access2000 to the previous version, the Access2000 is not only a more friendly interface, but their functions have also been strengthened, especially network function was improved, Internet Access2000 so that it more closely connected. Access2000 is a small and mediumsized database management system, easy to use, powerful, and other databases have a good interface. Access2000 through powerful tool, users can facilitate the use and management of databases, such as the creation and editing of data tables, design and the use of various tools inquiries query operation, design and the use of windows, production and printing statements, the design and use of Acer, the design and use of such Web pages. May also be used in Visual (Visual for Application)Advanced Application Development procedures. Access2000 is a plete database application development tool, the user can design, modify, View a record of the basic data table。Access2000 Relational DatabaseMembers of the Office family, the people of Access2000 understanding, often limited in its interface, for the database management function is still at the establishment table, data entry, Use Form guide Reporting Wizard, Data Access2000Page Wizard and other simple applications. In fact, the functions of the Access2000 is a powerful and beyond your imagination. It is released from Microsoft Access2000functions since most prehensive, Windows and the Internet more closely with the database software, is a very powerful, and simple, easytouse database management system (DBMS) that the database storage, processing and management system. Access2000 relational database management system is Microsoft Office Public automation software as an integral part. It can effectively organize, manage and share the information in the database, and database information with the Web together. Through the Internet to share database information with the basic platform. With the development of information technology. Information technology platform is often the choice of establishing or reestablishing applications of the key issues, the database is part of the need to make a choice as a key platform. Access2000 as a relational database management system small and medium sized information management system ideal development environment, the current database in the field, there are more and more people use. It is a powerful database management system MIS development tools. The database is stored together a collection of relevant data, the data is structured. The database is a data storage and data operation of the tool. The role of the database is to organize and present information, in short, the database is a collection of information. Computer database can be divided into two categories: nonrelational database (flat) and relational database (relational). Relational database contains a number of data tables, databases containing various parts of the terminology, like records. Relational database management system has the technological dominance of the mainstream, but this traditional database management systems by using twodimensional data model, and there are inherent limitations and restrictions. It difficult to adapt to today39。人們可以用不同的語(yǔ)言與計(jì)算機(jī)交流。但不管計(jì)算機(jī)結(jié)構(gòu)如何，它要干什么工作，人們總是用某一種形式的“語(yǔ)言”與計(jì)算機(jī)交流。我們可以說(shuō)，現(xiàn)代社會(huì)對(duì)計(jì)算機(jī)的要求是無(wú)止境的。用戶在界面上與計(jì)算機(jī)交互操作，就是調(diào)用它們之中的各個(gè)子程序。例如文字處理、表格處理、圖形處理、多媒體管理以及各種系統(tǒng)管理工具等軟件。我們應(yīng)該掌握程序設(shè)計(jì)語(yǔ)言中本質(zhì)性、規(guī)律性的東西。而且，隨著計(jì)算機(jī)科學(xué)的發(fā)展及應(yīng)用領(lǐng)域的迅速擴(kuò)展，各種語(yǔ)言版本都在不斷地變化，功能在不斷更新、增強(qiáng)。例如，有適于編寫系統(tǒng)軟件的，有便于進(jìn)行科學(xué)計(jì)算的，有善于數(shù)據(jù)庫(kù)管理的，有適合圖形設(shè)計(jì)的，又有專用于人工智能的，也有一些語(yǔ)言同時(shí)具備多種功能。Visual 。高級(jí)語(yǔ)言編寫的程序需要經(jīng)過(guò)較復(fù)雜的編譯才能成為機(jī)器指令。它不需面向機(jī)器，構(gòu)成簡(jiǎn)單，往往只有一百幾十條詞匯、若干條規(guī)則，便于記憶，易于學(xué)習(xí)，程序設(shè)計(jì)速度快。低級(jí)語(yǔ)言的特點(diǎn)是程序執(zhí)行速度快，效率高，但要求程序員了解機(jī)器的結(jié)構(gòu)，程序設(shè)計(jì)難度大，非專業(yè)人員難以涉足。這些指令記憶難度相當(dāng)大，為此，人們就采用一些特定的助記符代表機(jī)器指令，從而產(chǎn)生了匯編語(yǔ)言。低級(jí)語(yǔ)言又分為機(jī)器語(yǔ)言和匯編語(yǔ)言。從機(jī)器的執(zhí)行角度來(lái)說(shuō)，程序設(shè)計(jì)語(yǔ)言可以分成兩大類：低級(jí)語(yǔ)言和高級(jí)語(yǔ)言。而“程序設(shè)計(jì)語(yǔ)言”(也稱算法語(yǔ)言)是由字、詞和語(yǔ)法規(guī)則構(gòu)成的指令系統(tǒng)，是人與計(jì)算機(jī)交流的工具。比如，我們可以在文本框、圖片框的外圍加上一個(gè)框架來(lái)增加立體效果等等。(3) Frame框架控件Frame控件是一個(gè)非常簡(jiǎn)單的控件，它的任務(wù)只是在宙體中繪制一個(gè)很有立體感的框架，它的常用屬性就是一個(gè)caption屬性，用以顯示框架的標(biāo)題。全選上或者一個(gè)也不選都可以。在一組控件中，總是只有一個(gè)單選鈕處于選中狀態(tài)；如果選中了其中的一個(gè)，其余單選鈕則自動(dòng)清除為非選中狀態(tài)。這時(shí)，就需要使用OptionButton單選鈕控件；圖1就是一組單選鈕控件，它只允許用戶在其中選一種飲料，并且必須選—種。在Frame、PictureBox或者Form容器中使用這兩種選擇控件時(shí)，用戶可以分組使用。CheckBox控件，在組中顯示多項(xiàng)選擇，這些選擇提供了True、False或Yes、No選項(xiàng)，用戶可選擇其中的一項(xiàng)或多項(xiàng)；OptionButton控件，用戶可以在組中單項(xiàng)選擇?！　?4) 程序開(kāi)發(fā)環(huán)境高度集成化 Visual 、程序調(diào)試、程序運(yùn)行、程序編譯等各種功能的集成程序開(kāi)發(fā)環(huán)境（IDE）　　(5) Visual Visual 、命令及關(guān)鍵字，其中大部分與Windows圖形用戶界面相關(guān)，專業(yè)人員可以很方便地使用它們開(kāi)發(fā)出功能強(qiáng)大的Windows應(yīng)用程序。而不需要具體地考慮對(duì)象如何做、哪個(gè)先做、哪個(gè)后做的問(wèn)題。　　(2) 與基于Dos環(huán)境下的編程語(yǔ)言相比，Visual 　　與基于Dos環(huán)境下的編程語(yǔ)言相比，Visual ，使程序設(shè)計(jì)人員從煩瑣的程序設(shè)計(jì)細(xì)節(jié)中解脫出來(lái)，程序設(shè)計(jì)人員在進(jìn)行程序開(kāi)發(fā)時(shí)，選擇適當(dāng)?shù)膶?duì)象構(gòu)造自己需要的界面。自1991年問(wèn)世以來(lái)，Visual 95/98及Windows NT等各版本的操作系統(tǒng)的發(fā)展，廣泛