【正文】 the Internet. Then you can click on Hardware. Then you can click on Modems, etc., and along the way through sections, there are sites available which relate to what section you39。 Indexed5. Metasearch () Multiple searchesA web spider is a program used by search engines that goes from page to page, following any link it can possibly find. This means that a search engine can literally map out as much of the Internet as it’s own time and speed allows for.An indexed collection uses handadded links. For instance, on Yahoo39。 Indexed Collection3. Excite () Web spider amp。s easier to use an client (of course). There are millions of WebPages that e from all over the world, yet how will you know what the address of a page you want is? Search engines save the day. A search engine is a very large website that allows you to search its own database of websites. For instance, if you wanted to find a website on dogs, you39。s) in the run dialog. Linux has it built into the mand line。 you39。t run the file, ever. It could be a virus or some other kind of nasty programs. You can39。s what it is. Email enables people to send letters, and even files and pictures to each other. To use , you must have an client, which is just like a personal post office, since it retrieves and stores . Secondly, you must have an account. Most Internet Service Providers provide free account(s) for free. Some services offer free , like Hotmail, and Geocities. After configuring your client with your POP3 and SMTP server address (your provider will give you that information), you are ready to receive mail. An attachment is a file sent in a letter. If someone sends you an attachment and you don39。t been created yet, or because the site author made a typo in the page. There39。re reading this right now means that you have a web browser. Next you must be familiar with actually using WebPages. A webpage is a collection of hyperlinks, images, text, forms, menus, and multimedia. To navigate a webpage, simply click the links it provides or follow its own instructions (like if it has a form you need to use, it will probably instruct you how to use it). Basically, everything about a webpage is made to be self explanatory. That is the nature of a webpage, to be easily navigatable. “Oh! No! A 404 error! ’Cannot find web page?’” is a mon remark made by new webusers. Sometimes websites have errors. But an error on a website is not the user39。s going and overall where the user wants to go. 4. The router sends these packets to other routers, eventually leading to the target puter. It39。s where the tricky part es in. First, the puter sends data about it39。s look at how a standard puter might view a webpage. 1. The user39。thing39。s predicted that by the year 2003 every single person on the planet will have Internet access. The Internet has truly bee a way of life in our time and era, and is evolving so quickly its hard to determine where it will go next, as puter and network technology improve every day. HOW IT WORKS:It39。on line39。 is four or more puters connected by a network. ARPAnet achieved its network by using a protocol called TCP/IP. The basics around this protocol was that if information sent over a network failed to get through on one route, it would find another route to work with, as well as establishing a means for one puter to talk to another puter, regardless of whether it was a PC or a Macintosh. By the 8039。在登錄界面中輸入測試數(shù)據(jù)： 輸入測試數(shù)據(jù)測試結(jié)果顯示： 測試結(jié)果測試成功！結(jié)束語致 謝參考文獻[1] (第四版).北京:清華大學出版社,2006年[2] :人民郵電出版社,2002年[3] 張海藩,:清華大學出版社,2001年[4] :電子工業(yè)出版社,1996年[5] (第三版).北京:清華大學出版社，2007年[6] 王珊，(第四版).北京:高等教育出版社,2006年[7] 白尚旺，:西安電子科技大學出版社,2001年[8] :人民郵電出版社,2005年[9] ：人民郵電出版社，2007[10] 張瑜，李杰，：清華大學出版社，2007附錄Ⅰ英文原文About The InternetThe Internet started as a project by the US government. The object of the project was to create a means of munications between long distance points, in the event of a nation wide emergency or, more specifically, nuclear war. The project was called ARPAnet, and it is what the Internet started as. Funded specifically for military munication, the engineers responsible for ARPAnet had no idea of the possibilities of an Internet. By definition, an 39。應(yīng)該輸入的測試數(shù)據(jù)：填入不存在的職工編號“5666”。預(yù)期的結(jié)果：彈出提示：“此項不能為空！”。在登錄界面中輸入測試數(shù)據(jù)： 輸入測試數(shù)據(jù)測試結(jié)果顯示： 測試結(jié)果測試成功！ 測試方案四測試目的：測試模塊是否能夠?qū)?shù)據(jù)漏填進行報錯。應(yīng)該輸入的測試數(shù)據(jù)：輸入出生日期“202020”。預(yù)期的結(jié)果：彈出提示：“編輯失敗，請檢查輸入！”。在登錄界面中輸入測試數(shù)據(jù)： 輸入測試數(shù)據(jù) 測試結(jié)果顯示： 測試結(jié)果 測試成功！ 測試方案二測試目的：測試模塊是否能夠?qū)Σ环祥L度的輸入數(shù)據(jù)錯誤進行報錯。應(yīng)該輸入的測試數(shù)據(jù)：用戶名輸入“0000”，密碼輸入“123456”。測試方案包括測試目的、應(yīng)該輸入的測試數(shù)據(jù)、預(yù)期的結(jié)果以及實際運行測試的結(jié)果界面。測試的目標是保證系統(tǒng)在投入運行中的安全性和穩(wěn)定性。測試是為了發(fā)現(xiàn)軟件在運行過程中所發(fā)現(xiàn)的問題。返回：點擊“返回”按鈕取消添加，返回獎懲情況模塊。 工資情況模塊程序流程圖 添加新工資情況模塊程序流程圖用戶：管理員添加：點擊“添加”按鈕添加信息。返回：點擊“返回”按鈕取消添加，返回獎懲情況模塊。 獎懲情況模塊程序流程圖 添加獎懲情況模塊程序流程圖用戶：管理員添加：點擊“添加”按鈕添加信息。返回：點擊“返回”按鈕取消添加，返回用戶信息模塊。用戶：管理員添加：點擊“添加”按鈕添加信息。返回：點擊“返回”按鈕取消添加，返回用戶信息模塊。用戶：管理員添加：點擊“添加”按鈕添加信息。異常處理：查找的編號不存在，系統(tǒng)無信息顯示；編輯信息格式不正確，系統(tǒng)提示“添加失敗，請檢查輸入！”。編輯：點擊“編輯”后，出現(xiàn)“更新”和“取消”兩個按鈕，此時可以修改相應(yīng)職工信息，點擊“更新”信息修改成功，點擊“取消”則取消修改動作。查找：點擊“查找”按鈕查找職工信息。異常處理：帶 * 號為必填信息，如果有漏填，則系統(tǒng)提示“此項不能為空！”；如果輸入編號已經(jīng)存在，則系統(tǒng)提示“此編號已存在！”；如果日期格式錯誤，則系統(tǒng)提示“不是日期！”；如果未填寫所在部門編號或所填部門編號不存在，則系統(tǒng)提示“填寫失敗，請檢查輸入！” 職工基本信息模塊。重置：點擊“重置”按鈕清除之前所填信息，將界面初始化。異常處理：帶 * 號為必填信息，如果有漏填，則系統(tǒng)提示“此項不能為空！”；如果輸入編號已經(jīng)存在，則系統(tǒng)提示“此編號已存在！”；如果日期格式錯誤，則系統(tǒng)提示“不是日期！”；如果未填寫所在部門編號或所填部門編號不存在，則系統(tǒng)提示“填寫失敗，請檢查輸入！” 用戶信息模塊。重置：點擊“重置”按鈕清除之前所填信息，將界面初始化。 職工實體圖 部門實體圖 人事變動屬性圖 獎懲實體圖 工資實體圖 用戶實體圖 創(chuàng)建數(shù)據(jù)表 用戶信息表（users）用戶信息表如表41所示表41 用戶信息表 職工信息表（personnel_information）職工信息表如表42所示表42 職工信息表 部門信息表(personnel_department)部門信息表如表43所示表43部門信息表 人事變動信息表(personnel_transfer)人事變動信息表如表44所示表44人事變動信息表 獎懲信息表（personnel_rewardpunishment）獎懲信息表如表45所示表45 獎懲信息