【正文】 Spreadsheets, Google Calendar, Gmail, Picasa, and the like. All of these applications are hosted on Google’s servers, are accessible to any user with an Internet connection, and can be used for group collaboration from anywhere in the world.In short, cloud puting enables a shift from the puter to the user, from applications to tasks, and from isolated data to data that can be accessed from anywhere and shared with anyone.。 with network puting, access is over the pany’s network only.Cloud puting also isn’t traditional outsourcing, where a pany farms out (subcontracts) its puting services to an outside firm. While an outsourcing firm might host a pany’s data or applications, those documents and programs are only accessible to the pany’s employees via the pany’s network, not to the entire world via the Internet.So, despite superficial similarities, networking puting and outsourcing are not cloud puting.What Cloud Computing IsKey to the definition of cloud puting is the “cloud” itself. For our purposes, the cloud is a large group of interconnected puters. These puters can be personal puters or network servers。參考文獻(xiàn)[1] 高宏，：清華大學(xué)出版社，2012，25[2] 張聯(lián)鋒，：電子工業(yè)出版社，2011，418424[3] +：北京希望電子出版社，2010,115127[4] 史濟(jì)民，—原理、：高等教育出版社，2009,1971[5] James ：清華大學(xué)出版社，2006，93[6] 王國(guó)勝，：清華大學(xué)出版社，2009，[7] ：機(jī)械工業(yè)出版社，2007,162187[8] 王國(guó)勝，柴寶杰,+SQL ：清華大學(xué)出版社，2009,7896[9] ：清華大學(xué)出版社，2010,47156[10] ：北京希望電子出版社，2003,1246[11] +SQL Server ：電子工業(yè)出版社，2008,1296[12] Bill C:50 Specific Ways to Improve Your C.北京：人民郵電出版社，2003,53120[13] Dino Esposito． ．北京：清華大學(xué)出版社，2006，16101[14] Kouresh Ardestani．—C編程篇．北京：清華大學(xué)出版社，2003,36114[15] 朱玉超，鞠艷，王代勇． 項(xiàng)目開(kāi)發(fā)教程．北京：電子工業(yè)出版社，2008，114153[16] 胡勇輝，曹倬瑝，蘭湘濤．：入門(mén)、模塊、系統(tǒng)．北京：電子工業(yè)出版社，2006 ，1264[17] Server ：清華大學(xué)出版社，2007，4388[18] Jim Arlow，IIa Neustadt．UML 2 and the Unified Process:PracticalObjectOriented Analysis and Design,Second Edition．北京：人民郵電出版社．2006，1542[19] 張克非．．北京：北京航空航天大學(xué)出版社，2007，2899 [20] 劉乃麗．完全手冊(cè) ．北京：電子工業(yè)出版社，2008，1463翻譯部分英文原文Beyond the Desktop: An Introduction to Cloud ComputingMichael MillerIn a world that sees new technological trends bloom and fade on almost a daily basis, one new trend promises more longevity. This trend is called cloud puting, and it will change the way you use your puter and the Internet.Cloud puting portends a major change in how we store information and run applications. Instead of running program sand data on an individual desktop puter, everything is hosted in the “cloud”—a nebulous assemblage of puters and servers accessed via the Internet. Cloud puting lets you access all your applications and documents from anywhere in the world, freeing you from the confines of the desktop and making it easier for group members in different locations to collaborate.PART 1 Understanding Cloud Computing The emergence of cloud puting is the puting equivalent of the electricity revolution of a century ago. Before the advent of electrical utilities, every farm and business produced its own electricity from freestanding generators. After the electrical grid was created, farms and businesses shut down their generators and bought electricity from the utilities, at a much lower price (and with much greater reliability) than they could produce on their own. Look for the same type of revolution to occur as cloud puting takes hold. The desktopcentric notion of puting that we hold today is bound to fall by the wayside as we e to expect the universal access, 24/7 reliability, and ubiquitous collaboration promised by cloud puting. It is the way of the future.Cloud Computing: What It Is—and What It Isn’t With traditional desktop puting, you run copies of software programs on each puter you own. The documents you create are stored on the puter on which they were created. Although documents can be accessed from other puters on the network, they can’t be accessed by puters outside the network.The whole scene is PCcentric.With cloud puting, the software programs you use aren’t run from your personal puter, but are rather stored on servers accessed via the Internet. If your puter crashes, the software is still available for others to use. Same goes for the documents you create?？梢哉f(shuō)基本上實(shí)現(xiàn)了超市倉(cāng)庫(kù)的管理。比如增強(qiáng)倉(cāng)庫(kù)管理和商品銷(xiāo)售之間的聯(lián)系，增加銷(xiāo)售情況統(tǒng)計(jì)，根據(jù)銷(xiāo)售情況識(shí)別滯銷(xiāo)商品等。（5）了解了正則表達(dá)式的相關(guān)知識(shí)，并運(yùn)用到系統(tǒng)中對(duì)手機(jī)號(hào)碼、固定電話號(hào)碼進(jìn)行格式判斷。（3）學(xué)習(xí)了javascript腳本語(yǔ)言的相關(guān)知識(shí)，并利用該語(yǔ)言在系統(tǒng)中實(shí)現(xiàn)了自動(dòng)報(bào)警消息彈窗。所做的主要工作有：（1）。測(cè)試通過(guò)。當(dāng)輸入的手機(jī)號(hào)碼不符合格式時(shí)，點(diǎn)擊提交系統(tǒng)也會(huì)提示輸入的手機(jī)號(hào)碼格式不正確。針對(duì)以上情況，分別進(jìn)行了相關(guān)測(cè)試。聯(lián)系電話正則表達(dá)式可以同時(shí)驗(yàn)證當(dāng)前國(guó)內(nèi)的多種電話號(hào)碼格式：3位區(qū)號(hào)8位電話號(hào)、4位區(qū)號(hào)8位電話號(hào)、4位區(qū)號(hào)7位電話號(hào)。測(cè)試通過(guò)。然后輸入正確的舊密碼，但是輸入的兩次新密碼不一致，再次點(diǎn)擊提交按鈕，系統(tǒng)并沒(méi)有提示舊密碼錯(cuò)誤，而是提示兩次輸入的新密碼不一致，修改失敗。如果舊密碼正確但是兩次新密碼不一致，則修改失敗，密碼不變。測(cè)試通過(guò)。然后手動(dòng)修改，使得一些商品的庫(kù)存低于庫(kù)存下限，這時(shí)候重新運(yùn)行程序，系統(tǒng)自動(dòng)彈出報(bào)警，提示存在商品不足商品，點(diǎn)擊查看。針對(duì)自動(dòng)報(bào)警功能，為了便于測(cè)試，選擇了直接在數(shù)據(jù)庫(kù)中修改商品的庫(kù)存量。（4）系統(tǒng)自動(dòng)報(bào)警測(cè)試系統(tǒng)加載每一個(gè)頁(yè)面時(shí)，都會(huì)首先進(jìn)行商品庫(kù)存量和商品庫(kù)存的最低限度值的比較。當(dāng)輸入錯(cuò)誤的密碼時(shí)，系統(tǒng)彈出消息提示框提示“密碼錯(cuò)誤”，登錄失敗。針對(duì)密碼驗(yàn)證，同樣做了兩組測(cè)試：分別輸入與用戶名匹配的密碼和不匹配的密碼。測(cè)試通過(guò)。測(cè)試結(jié)果：當(dāng)輸入有效的用戶名時(shí)，系統(tǒng)不會(huì)彈出用戶名不存在的消息框，而是進(jìn)行密碼驗(yàn)證。（2）用戶名有效性測(cè)試如果驗(yàn)證碼驗(yàn)證通過(guò)，系統(tǒng)會(huì)接著進(jìn)行用戶名驗(yàn)證。當(dāng)輸入錯(cuò)誤驗(yàn)證碼時(shí)，系統(tǒng)立即彈出驗(yàn)證碼錯(cuò)誤消息框，終止執(zhí)行，并終止本次登錄。（1）驗(yàn)證碼測(cè)試系統(tǒng)登錄模塊具有驗(yàn)證碼驗(yàn)證功能，針對(duì)該功能做了兩項(xiàng)測(cè)試：輸入正確的驗(yàn)證碼和錯(cuò)誤的驗(yàn)證碼。它一般用人工方式脫機(jī)完成，因此也叫做人工測(cè)試或代碼評(píng)審；也可以借助靜態(tài)分析器在計(jì)算機(jī)上進(jìn)行檢查，但不要求執(zhí)行程序。為便于區(qū)分，一般把前者稱(chēng)為動(dòng)態(tài)測(cè)試，后者稱(chēng)為靜態(tài)分析。按照這個(gè)定義，測(cè)試是一個(gè)執(zhí)行程序的過(guò)程，即要求被測(cè)試程序在計(jì)算機(jī)上運(yùn)行。隨著人類(lèi)對(duì)計(jì)算機(jī)應(yīng)用的逐漸深入，人們對(duì)軟件的要求也越來(lái)越高，因此，軟件測(cè)試也顯得越來(lái)越重要。如果兩次輸入的新密碼不一致，則修改失敗。用戶管理主要實(shí)現(xiàn)對(duì)密碼修改功能。系統(tǒng)會(huì)對(duì)輸入的聯(lián)系電話進(jìn)行檢測(cè)，如果不符合目前國(guó)內(nèi)所有的電話號(hào)碼格式，則會(huì)報(bào)錯(cuò)要求重新輸入聯(lián)系電話，頁(yè)面截圖如圖510所示。當(dāng)選擇對(duì)收貨單位或供貨單位管理時(shí)，管理員可以對(duì)信息進(jìn)行修改或刪除，也可以添加新的收貨單位或供貨單位。首先管理員可以選中商品盤(pán)存信息查看所有商品盤(pán)存信息，如果管理員需要快速得到某一商品的盤(pán)存信息，可以選擇商品查詢(xún)選項(xiàng)，該選項(xiàng)提供按商品名稱(chēng)查詢(xún)功能，可以得到所需商品的全部信息，當(dāng)然該選項(xiàng)下還有另一種功能，即按種類(lèi)查詢(xún)功能，可以查詢(xún)某一類(lèi)商品的全部信息。入庫(kù)統(tǒng)計(jì)頁(yè)面截圖如圖59所示。當(dāng)選擇入庫(kù)統(tǒng)計(jì)或者出庫(kù)統(tǒng)計(jì)時(shí)，系統(tǒng)會(huì)要求輸入開(kāi)始時(shí)間和終止時(shí)間，輸入完成后點(diǎn)擊統(tǒng)計(jì)可以統(tǒng)計(jì)之一時(shí)間段內(nèi)的所有出入庫(kù)記錄。圖58 添加商品信息界面截圖出庫(kù)入庫(kù)管理是超市倉(cāng)庫(kù)管理中的基本功能，實(shí)現(xiàn)對(duì)商品進(jìn)出的登記、信息修改和刪除等。商品管理頁(yè)面截圖如圖57所示。每條信息后面緊跟著刪除和修改操作，可以根據(jù)需要進(jìn)行選擇。圖56 查看庫(kù)存不足信息界面截圖商品管理主要實(shí)現(xiàn)對(duì)新商品的添加、對(duì)商品信息的刪除和修改。圖55 自動(dòng)彈出消息界面截圖查看庫(kù)存不足信息頁(yè)面截圖如圖56所示。 setTimeout(tips_pop(), 3000)。). = 39。 //隱藏DIV } } } function message() {//加載 (39。 } else {