【正文】 . 2 摘要 ........................................................................................................................................ 3 第一章．開(kāi)發(fā)本系統(tǒng)的目的及意義？ ....................................................................................... 6 用計(jì)算機(jī)管理圖書(shū)的意義 ............................................................................................ 7 圖書(shū)租借的設(shè)計(jì)分析 ................................................................................................... 7 第二章 系統(tǒng)需求分析 ............................................................................................................. 8 現(xiàn)行業(yè)務(wù)描述： .......................................................................................................... 8 現(xiàn)行系統(tǒng)存在問(wèn)題的分析 .......................................................................................... 10 2． 3 解決方案 ................................................................................................................ 10 2． 4 可行性分析 ............................................................................................................ 12 第三章 系統(tǒng)分析與設(shè)計(jì) ........................................................................................................ 12 現(xiàn)系統(tǒng)中存在的問(wèn)題 ................................................................................................. 12 新系統(tǒng)的目標(biāo) ........................................................................................................... 13 應(yīng)用需求分析 .......................................................................................................... 13 系統(tǒng)數(shù)據(jù)庫(kù)設(shè)計(jì) ....................................................................................................... 15 系統(tǒng)總體規(guī)劃 ........................................................................................................................ 23 系統(tǒng)功能 .................................................................................................................. 23 流程圖 ...................................................................................................................... 24 數(shù)據(jù)庫(kù)設(shè)計(jì) ............................................................................................................... 25 數(shù)據(jù)庫(kù)詳細(xì)設(shè)計(jì) ........................................................................................................ 31 第六章 系統(tǒng)功能模塊結(jié)構(gòu)與實(shí)現(xiàn) .......................................................................................... 35 6． 1 登錄界面的實(shí)現(xiàn) ..................................................................................................... 35 6． 2 系統(tǒng)數(shù)據(jù)庫(kù)的實(shí)現(xiàn) ................................................................................................. 37 結(jié)束語(yǔ) .................................................................................................................................. 38 參考文獻(xiàn) ............................................................................................................................... 39 第一章．開(kāi)發(fā)本系統(tǒng)的目的及意義？ 今天，計(jì)算機(jī)的價(jià)格已經(jīng)十分低廉，性能卻有了長(zhǎng)足的進(jìn)步。 圖書(shū)租借的設(shè)計(jì)分析 根據(jù)實(shí)際情況，我們使用原型法（ Rapid Prototyping）即以少量代價(jià)快速地構(gòu)造一個(gè)可執(zhí)行的軟件系統(tǒng)模型。 （ 5）圖書(shū)租借管理員把借書(shū)卡保存到寫(xiě)有該讀者借書(shū)證號(hào)的口袋里。 這四個(gè)方面形成了圖書(shū)館一個(gè)工作整體，采用計(jì)算機(jī)自動(dòng)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。 管理上可行：該圖書(shū)館有很多的管理體制，每位借書(shū)人均有借書(shū)證，同時(shí)圖書(shū)館還為每位借書(shū)人建立了檔案。該系統(tǒng)已不能滿足多個(gè)人員對(duì)數(shù)據(jù)的索?。蝗绺笨崎L(zhǎng)管理計(jì)算機(jī)，則科長(zhǎng)就不能在自己的辦公室中查看資料。 圖書(shū)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。 1)確定公共實(shí)體類型 為了給多個(gè)局部 ER模式的合并提供開(kāi)始合并的基礎(chǔ)，首先要確定各局部結(jié)構(gòu)中的公共實(shí)體類型。數(shù)據(jù)庫(kù)是 MIS 中的重要支持技術(shù)，在 MIS 開(kāi)發(fā)過(guò)程 中，如何選擇數(shù)據(jù)庫(kù)管理是一個(gè)重要的問(wèn)題，目前，數(shù)據(jù)庫(kù)產(chǎn)品較多，每種產(chǎn)品都具有各自的特點(diǎn)和適用范圍，因此，在選擇數(shù)據(jù)庫(kù)時(shí)，應(yīng)考慮數(shù)據(jù)庫(kù)應(yīng)用的特點(diǎn)及適用范圍，本系統(tǒng)選用的數(shù)據(jù)庫(kù)語(yǔ)言 Visual Basic 語(yǔ)言，該開(kāi)發(fā)工具具有很多長(zhǎng)處： Visual Basic 是一種可視化的、面對(duì)對(duì)象和條用事件驅(qū)動(dòng)方式的結(jié)構(gòu)化高級(jí)程序設(shè)計(jì)，可用于開(kāi)發(fā) Windows 環(huán)境下的種類應(yīng)用程序。 Visual Basic 自動(dòng)產(chǎn)生界面設(shè)計(jì)代碼，程序設(shè)計(jì)人員只需要編寫(xiě)實(shí)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(jì)的效率。在設(shè)計(jì) Visual Basic 程序的過(guò)程中，隨時(shí)可以運(yùn)行程序，而在整個(gè)程序設(shè)計(jì)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(yùn)行。 Visual Basic 提供 開(kāi)放式數(shù)據(jù)連接，即 ODBC 功能，可通過(guò)直接訪問(wèn)或建立連接的方式使用并操作后臺(tái)大型網(wǎng)絡(luò)數(shù)據(jù)庫(kù)，如 SQL Server， Oracle 等。 動(dòng)態(tài)鏈接庫(kù) (DLL) Visual Basic是一種高級(jí)程序設(shè)計(jì)語(yǔ)言，不具備低級(jí)語(yǔ)言的功能，對(duì)訪問(wèn)機(jī)器硬件的操作不太容易實(shí)現(xiàn)。 Access 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。 DATA控件還提供了用來(lái)瀏覽不同記錄的各種跳轉(zhuǎn)按鈕。 數(shù)據(jù)庫(kù)的設(shè)計(jì)和開(kāi)發(fā)及包括藝術(shù)有包括工程。存儲(chǔ)器的容量、存儲(chǔ)速率直接影響到數(shù)據(jù)管理技術(shù)的發(fā)展。同時(shí)合理的數(shù)據(jù)結(jié)構(gòu)也將有利于程序的實(shí)現(xiàn)。 在下面的對(duì)話框中選 ” 使用設(shè)計(jì)器創(chuàng)建表 ” ，上面 還有三個(gè)按鈕，一個(gè)是打開(kāi)，一個(gè)是設(shè)計(jì)，一個(gè)是新建，點(diǎn)擊設(shè)計(jì)，就可以開(kāi)始設(shè)計(jì)數(shù)據(jù)表了。設(shè)置數(shù)據(jù)的路徑 Provider=。如果聲明在下面，那就成了局部變量，那么作用范圍就會(huì)不同了，作用就更不同，而且在其它窗體中使用到了這個(gè)變量，程序會(huì)出錯(cuò)。（因表較多，只列出兩表） 管理員表：用于存放管理員的信息。楊老師認(rèn)真負(fù)責(zé)的工作態(tài)度，嚴(yán)謹(jǐn)?shù)闹螌W(xué)精神和深厚的理論水平都使我收益匪淺。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。 and the celerity with which Buck broke them in took away Francois39。 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 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 answer. And now we make good time. No more Spitz, no more trouble, sure. While Perrault packed the camp outfit and loa