【正文】 be content with less. Perrault took a hand. Between them they ran him about for the better part of an hour. They threw clubs at him. He dodged. They cursed him, and his fathers and mothers before him, and all his seed to e after him down to the remotest generation, and every hair on his body and drop of blood in his veins。s heels, and w ho never put an ounce more of his weight against the breastband than he was pelled to do, was swiftly and repeatedly shaken for loafing。s life for good. A Scotch halfbreed took charge of him and his mates, and in pany with a dozen other dogteams he started back over the weary trail to Dawson. It was no light running now, nor record time, but heavy toil each day, with a heavy load behind。 the instincts (which were but the memor ies of his ancestors bee habits) which had lapsed in later days, and still later, in him, quickened and became alive again. Sometimes as he crouched there, blinking dreamily at the flames, it seemed that the flames were of another fire, and that as he crouched by this other fire he saw another and different man from the halfbreed cook before him. This other man was shorter of leg and longer of arm, with muscles that were str ingy and knotty rather than rounded and swelling. The hair of this man was long and matted, and his head slanted bac k under it from the eyes. He uttered strange sounds, and seemed very much afraid of the dar kne ss, into which he 。s big house in the sun kissed Santa Clara Valley, and of the cement swimming tank, and Ysabel, the Mexican hairless, and Toots, the Japanese pug。 and the celerity with which Buck broke them in took away Francois39。s traces and put him back in his old place. The team stood harnessed to the sled in an unbroken li ne, ready for the trail. T here was no place for Buc k save at the front. Once more Francois called, and once more Buck laughed and kept away. Throw down de club, Perrault manded. Francois plied, w hereupon Buck trotted in, laughing tr iumphantly, and swung around into position at the head of the team. His traces were fastened, the sled broken out, and w ith both men running they dashed out on to the river trail. Highly as the dogdriver had forevalued Buc k, w ith his two devils, he found, while the day was yet young, that he had undervalued. At a bound Buc k took up the duties of leadership。way, Hook! he cried, but Buck refused to budge. He took Buc k by the scruff of the neck, and though the dog growled threateningly, dragged him to one side and replaced Solle ks. T he old dog did not like it, and showed plainly that he was afraid of Buc k. Francois was obdurate, but when he turned his back, Buck again displaced Solleks, who was not at all unwilling to go. Francois was angry. Now, by Gar, I fix you! he cried, ing back with a heavy club in his hand. Buc k remembered the man in the red sweater, and retreated slow ly。s speech next morning when he discovered Spitz missing and Buck covered with wounds. He drew him to the fir e and by its light pointed them out. Dat Spitz fight like hell, said Perrault, as he surveyed the gaping rips and cuts. An39。楊老師認真負責的工作態(tài)度，嚴謹?shù)闹螌W精神和深厚的理論水平都使我收益匪淺。 對于數(shù)據(jù)的一致性的問題也通過程序進行了有效的解決。（因表較多，只列出兩表） 管理員表：用于存放管理員的信息。 6. 2. 2管理 會員管理、會員管理、普通讀者管理、注冊會員、刪除會員、修改 會員信息、會員類型設(shè)置，添加書籍、刪除書籍、修改書信息、借閱書籍、歸還書籍，普通讀者登記、修改讀者信息。如果聲明在下面，那就成了局部變量，那么作用范圍就會不同了，作用就更不同，而且在其它窗體中使用到了這個變量，程序會出錯。設(shè)置數(shù)據(jù)庫對像 End Sub 上面的一段代碼就是連接數(shù)據(jù)庫的。設(shè)置數(shù)據(jù)的路徑 Provider=。連接數(shù)據(jù)庫 Set conn = CreateObject() 39。 在下面的對話框中選 ” 使用設(shè)計器創(chuàng)建表 ” ，上面 還有三個按鈕，一個是打開，一個是設(shè)計，一個是新建，點擊設(shè)計，就可以開始設(shè)計數(shù)據(jù)表了。這些就新建了一個數(shù)據(jù)庫文件。同時合理的數(shù)據(jù)結(jié)構(gòu)也將有利于程序的實現(xiàn)。數(shù)據(jù)管理是指數(shù)據(jù)的收集、整理、組織 、存儲、維護、檢索、傳送等操作，這部分操作是數(shù)據(jù)處理業(yè)務的基本環(huán)節(jié)，而且是任何數(shù)據(jù)處理業(yè)務中必不可少的共有部分。存儲器的容量、存儲速率直接影響到數(shù)據(jù)管理技術(shù)的發(fā)展。經(jīng)典的數(shù)據(jù)庫應用涉及諸如訂單、顧客、工作、員工、學生、電話之類的項，或其它數(shù)據(jù)量較大、需要密切關(guān)注的事務。 數(shù)據(jù)庫的設(shè)計和開發(fā)及包括藝術(shù)有包括工程。數(shù)據(jù)庫技術(shù)能使 Inter 應用超越具有早期應用特點的簡單的發(fā)布。 DATA控件還提供了用來瀏覽不同記錄的各種跳轉(zhuǎn)按鈕。 DATA 控件在數(shù)據(jù)庫中的信息與將信息顯示給用戶看的 Visual Basic程序之間架起了一座橋梁。 Access 是一種關(guān)系數(shù)據(jù)庫工具，關(guān)系數(shù)據(jù)庫是已開發(fā)的最通用的數(shù)據(jù)庫之一。 Access 的優(yōu)點在于它能使用數(shù)據(jù)表示圖或自定義窗體收集信息。 動態(tài)鏈接庫 (DLL) Visual Basic是一種高級程序設(shè)計語言，不具備低級語言的功能，對訪問機器硬件的操作不太容易實現(xiàn)。 Visual Basic 提供了動態(tài)數(shù)據(jù)交換的編程技術(shù)，可以在應用程序中與其他 Windows 應用程序建立動態(tài)數(shù)據(jù)交換，在不同的應用程序之間進行通信。 Visual Basic 提供 開放式數(shù)據(jù)連接，即 ODBC 功能，可通過直接訪問或建立連接的方式使用并操作后臺大型網(wǎng)絡(luò)數(shù)據(jù)庫，如 SQL Server， Oracle 等。 在用 Visual Basic 設(shè)計大型應用軟件時，不必建立具有明顯開始和結(jié)束的程序，而是編寫若干個微小的子程序，即過程。在設(shè)計 Visual Basic 程序的過程中，隨時可以運行程序，而在整個程序設(shè)計好之后，可以編譯生成 可執(zhí)行文件 (.EXE)，脫離 Visual Basic 環(huán)境，直接在 Windows 環(huán)境下運行。每個對象以圖形方式顯示在界面上，都是可視的。 Visual Basic 自動產(chǎn)生界面設(shè)計代碼，程序設(shè)計人員只需要編寫實現(xiàn)程序功能的那部分代碼，從而可以大大提高程序設(shè)計的效率。如果對界 面的效果不滿意，還要回到程序中修改。數(shù)據(jù)庫是 MIS 中的重要支持技術(shù)，在 MIS 開發(fā)過程 中，如何選擇數(shù)據(jù)庫管理是一個重要的問題，目前，數(shù)據(jù)庫產(chǎn)品較多，每種產(chǎn)品都具有各自的特點和適用范圍，因此，在選擇數(shù)據(jù)庫時，應考慮數(shù)據(jù)庫應用的特點及適用范圍，本系統(tǒng)選用的數(shù)據(jù)庫語言 Visual Basic 語言，該開發(fā)工具具有很多長處： Visual Basic 是一種可視化的、面對對象和條用事件驅(qū)動方式的結(jié)構(gòu)化高級程序設(shè)計，可用于開發(fā) Windows 環(huán)境下的種類應用程序。 第四章 開發(fā)工具與數(shù)據(jù)庫選擇 現(xiàn)在，市場上可以選購的應用開發(fā)產(chǎn)品很多，流行的也有數(shù)十種。 1)確定公共實體類型 為了給多個局部 ER模式的合并提供開始合并的基礎(chǔ)，首先要確定各局部結(jié)構(gòu)中的公共實體類型。將概念設(shè)計從設(shè)計過程中獨立開來，使各階段的任務相對單一化，設(shè)計復雜程度大大降低，不受特定 DBMS的限制。 圖書租借管理系統(tǒng)功能的信息量大，數(shù)據(jù)安全性和保密性要求最高。 應用需求分析 對圖書借閱者、圖書租借進行管理和維護，及系統(tǒng)狀態(tài)的查看、維護并生成催還圖書租借報表。該系統(tǒng)已不能滿足多個人員對數(shù)據(jù)的索?。蝗绺笨崎L管理計算機，則科長就不能在自己的辦公室中查看資料。系統(tǒng)輸入繁瑣，極易產(chǎn)生輸入錯誤，缺少智能化輸入功能，如：圖書名稱輸入過程中，單位名稱和單位代碼不能夠相互協(xié)調(diào)，易產(chǎn)生不匹配現(xiàn)象。 管理上可行：該圖書館有很多的管理體制，每位借書人均有借書證，同時圖書館還為每位借書人建立了檔案。 2． 4 可行性分析 通過對該圖書館的各個方面進行了具體的了解之后，現(xiàn)對該單位開發(fā)圖書租借管理系統(tǒng)的可行性進行分析。 這四個方面形成了圖書館一個工作整體，采用計算機自動化信息處理，可方便快捷地共享信息、交流信息，高效地 協(xié)同工作。 2． 3 解決方案 基于以上的對問題的分析，利用計算機給我們提供信息，及時地調(diào)整圖書館圖書租借結(jié)構(gòu)，并且對借閱人員的借閱過程形成一整套動態(tài)的管理就十分必要了。 （ 5）圖書租借管理員把借書卡保存到寫有該讀者借書證號的口袋里。 （ 2）目錄廳主要負責讀者查詢工作，包括可借圖書租借（按圖書租借類別、圖書租借名稱或圖書租借作者查詢）；新書目錄（按圖書租借類別、日期查詢）；借書情況（按讀者借書證號查詢） （ 3）借閱組主要負責圖書租借流通、查詢統(tǒng)計、借閱查詢等工作。 圖書租借的設(shè)計分析 根據(jù)實際情況，我們使用原型法（ Rapid Prototyping）即以少量代價快速地構(gòu)造一個可執(zhí)行的軟件系統(tǒng)模型。迫使人們起用新的管理方法來管理圖書租借，如何把圖書管理員從繁重的工作中解脫出來呢？科學技 術(shù)日新月異的進步，讓人類生活發(fā)生了巨大的變化，計算機技術(shù)的飛速發(fā)展，使各行各業(yè)在計算機技術(shù)應用方面得到了廣泛的普及和使用。t little, this text introduced under the Visual the environment adoption from top to bottom total programming, from the detailed process that bottom but up applied deve