【正文】 　　使用簡(jiǎn)便，用戶(hù)無(wú)需了解編程語(yǔ)言，便可輕松地設(shè)計(jì)和開(kāi)發(fā)數(shù)據(jù)庫(kù)應(yīng)用程序?！　∨c其它的關(guān)系型數(shù)據(jù)庫(kù)管理系統(tǒng)相比，Access2000具有以下優(yōu)點(diǎn)：　　存儲(chǔ)文件單一。 　　Access2000中的宏可以實(shí)現(xiàn)操作的自動(dòng)化，使操作更加簡(jiǎn)單、快捷?！　ccess2000具有完整的數(shù)據(jù)庫(kù)應(yīng)用開(kāi)發(fā)工具，用戶(hù)可以方便的設(shè)計(jì)、修改、瀏覽一個(gè)記錄數(shù)據(jù)的基本表；可以在表數(shù)據(jù)中進(jìn)行各種篩選和查詢(xún)操作；可以設(shè)計(jì)和使用各種窗體以實(shí)現(xiàn)數(shù)據(jù)顯示和操作；可以根據(jù)表數(shù)據(jù)設(shè)計(jì)打印各種報(bào)表；可以設(shè)計(jì)和使用宏，對(duì)表進(jìn)行一系列特定的操作。與以前的Access版本相比，Access2000不僅界面更加友好，而且功能也有了加強(qiáng)，尤其是網(wǎng)絡(luò)功能有明顯的提高，使Access2000與互聯(lián)網(wǎng)的結(jié)合更加緊密。并且在數(shù)據(jù)需要作報(bào)表輸出時(shí)，又要反過(guò)來(lái)將已分散設(shè)置的大量的兩維數(shù)據(jù)表，再利用索引等技術(shù)進(jìn)行表的連接后，才能找到全部所需的數(shù)據(jù)，而這又勢(shì)必影響到應(yīng)用系統(tǒng)的響應(yīng)速度。 為靜態(tài)應(yīng)用例如報(bào)表生成，而設(shè)計(jì)的關(guān)系型數(shù)據(jù)庫(kù)管理系統(tǒng)，并沒(méi)有經(jīng)過(guò)針對(duì)高效事務(wù)處理而進(jìn)行的優(yōu)化過(guò)程。關(guān)系型數(shù)據(jù)庫(kù)管理系統(tǒng)本身固有的局限性，表現(xiàn)在以下三個(gè)方面： 關(guān)系數(shù)據(jù)庫(kù)所采用的兩維表數(shù)據(jù)模型，不能有效地處理在大多數(shù)事務(wù)處理應(yīng)用中，典型存在的多維數(shù)據(jù)。隱式權(quán)限是指授予組賬號(hào)的權(quán)限，即用戶(hù)加入到組中的同時(shí)被賦予的組的權(quán)限。Access2000 是一種關(guān)系數(shù)據(jù)庫(kù)工具，關(guān)系數(shù)據(jù)庫(kù)是已開(kāi)發(fā)的最通用的數(shù)據(jù)庫(kù)之一。Access2000 的優(yōu)點(diǎn)在于它能使用數(shù)據(jù)表示圖或自定義窗體收集信息。這一變化給數(shù)據(jù)庫(kù)技術(shù)帶來(lái)了巨大挑戰(zhàn)，數(shù)據(jù)庫(kù)管理的對(duì)象已不再僅限于文本數(shù)據(jù)等簡(jiǎn)單的數(shù)據(jù)類(lèi)型，而需要描述和保存大量多媒體非結(jié)構(gòu)化的復(fù)雜數(shù)據(jù)，以及數(shù)據(jù)間的關(guān)系。關(guān)系數(shù)據(jù)庫(kù)中包含了多個(gè)數(shù)據(jù)表的信息，數(shù)據(jù)庫(kù)含有各個(gè)不同部分的術(shù)語(yǔ)，象記錄等。它是一個(gè)功能強(qiáng)大的數(shù)據(jù)庫(kù)管理系統(tǒng)的MIS系統(tǒng)開(kāi)發(fā)工具。Access2000關(guān)系型數(shù)據(jù)庫(kù)管理系統(tǒng)是Microsoft公司的Office辦公自動(dòng)化軟件的一個(gè)組成部分。 Data tables can design various print statements。s rapidly changing business needs, and the development of new technologies. With the rapid IT development, data processing, not only in quantity increasingly demanding, but also the quality of increasingly high demand, database management data has been a fundamental change. This change to the database technology has brought tremendous challenges, Object database management is no longer limited to text data and other simple data types. And the description and the need to preserve a lot of plex unstructured multimedia data, and the relationship between the data. Furthermore, in the wake of popular websites surge in the number of visits to its own database storage mechanism, a large number of concurrent users to the demand, storage efficiency in the use of space, and data integrity and security, and other aspects of higher demand. These are not traditional relational database, the use of a simple twodimensional table structure of the meet. Access2000 is the relational database development tools, database pooling information for the inquiry, Storage and retrieval. Access2000 the advantage lies in its ability to use data map or custom windows to collect information. Data provides a map similar to the Excel spreadsheet, database transparent. In addition, the Access2000 allows creation of custom statements to print or export the information in the database. Access2000 also provides a data repository. Can use desktop database file to extend the database file at the network file server and other network users to share databases? Access2000 is a relational database tools, database development, is the most mon databases. As noted above, as an Access2000 database development possesses many advantages, in a data packet available at the same time facilitate the desktop database and a powerful relational database functions.In Access2000, with the user database access permissions are two types: Explicit and implicit powers authority. Explicit authority is granted a direct user account petence, which is the exclusive use of user accounts, has nothing to do with other users. Implicit authority is delegated the authority group account, the user added to the group was given by the group39。從這個(gè)思路出發(fā)，計(jì)算機(jī)系統(tǒng)可以看作是一個(gè)由不同層次語(yǔ)言構(gòu)成的系統(tǒng)。然而，世界是復(fù)雜的、千變?nèi)f化的，人們要求計(jì)算機(jī)做的工作也千差萬(wàn)別。為了滿足人們各種特定的需要，計(jì)算機(jī)工作者開(kāi)發(fā)了各種工具軟件。從應(yīng)用角度，我們難以對(duì)程序設(shè)計(jì)語(yǔ)言作嚴(yán)格分類(lèi)。在不同的應(yīng)用場(chǎng)合，往往使用不同的語(yǔ)言設(shè)計(jì)應(yīng)用程序。高級(jí)語(yǔ)言是由人們易于接受的、接近人類(lèi)語(yǔ)言的描述方式構(gòu)成的指令系統(tǒng)。機(jī)器語(yǔ)言指令由只包含“0”和“1”的二進(jìn)制符號(hào)按一定規(guī)律組成，能夠被機(jī)器直接執(zhí)行。使用程序設(shè)計(jì)語(yǔ)言，我們只需要告訴計(jì)算機(jī)什么時(shí)候、什么條件下干什么，計(jì)算機(jī)就會(huì)按照要求一條一條地執(zhí)行指令，并把執(zhí)行結(jié)果告訴我們。Frame控件很少單獨(dú)使用，它總是與其它的控件配合使用。(2) 復(fù)選框控件(CheckBox)CheckBox控件與OptionButton控件有些相似，但使用時(shí)有一個(gè)很大的不同，即CheckBox控件是彼此獨(dú)立工作的，它們互不相干，沒(méi)有絲毫的制約關(guān)系。 (1) 單選按鈕控件(OptionButton) 在應(yīng)用程序中，有時(shí)需要用戶(hù)進(jìn)行這樣的選擇：在幾個(gè)選擇項(xiàng)中只能選擇其中的—種，且必須選擇一種，因?yàn)檫@幾種情況是互相排斥的。 2 Visual 選擇控件可以分為復(fù)選框控件(CheckBox)和單選按鈕控件(OptionButton)。然后安排好某對(duì)象接收到何消息做什么就可以了。1 Visual Visual 。 何謂 Visual ？“Visual”指的是采用可視化的開(kāi)發(fā)圖形用戶(hù)界面（GUI）的方法，一般不需要編寫(xiě)大量代碼去描述界面元素的外觀和位置，而只要把需要的控件拖放到屏幕上的相應(yīng)位置即可；“Basic”指的是BASIC語(yǔ)言，因?yàn)閂isual ，至今包含了數(shù)百條語(yǔ)句、函數(shù)及關(guān)鍵詞，其中很多和 Windows GUI 有直接關(guān)系。 close to human language to describe the way constitute Instruction System. It need not machineoriented, constitute simple, usually only one hundred scores of vocabulary, some of the rules that allow memory, and easy to learn. Programming speed. People say programming languages usually refers to highlevel language. Senior language procedures require more plex piler directives in order to bee machines. In different applications often use different language design applications. Visual language is a mon senior programming language. Computer application areas is extensive, in order to meet different needs, programming language, often also the characteristics. For example, a system suitable for the preparation of the software, facilitate scientific puting, database management is good at. Suitable graphic design as well as dedicated to artificial intelligence, there are also some language also have multiple functions. From the application perspective, we can right programming language for the strict classification. Moreover, with the development of puter science and application of the rapid expansion of various language versions are constantly changing, function continuously update and enhance. Each period has a number of language in popular, there were a number of language in the disappearance. We should grasp programming language in nature, regularity of things. To mee