【導讀】維護，以及前端應用程序的開發(fā)兩個方面。對于前者要求建立起數(shù)據(jù)庫一致性和。完整性強，數(shù)據(jù)安全性好的庫。而后者則要求應用程序功能完備，易使用等特點。語言原理，VFP數(shù)據(jù)庫技術進行了較深的學習和應用。主要完成對資料管理系統(tǒng)。的要求分析，功能模塊劃分，并由此設計了數(shù)據(jù)庫結構和應用程序。管理三方面要求。面功能及對數(shù)據(jù)庫的支持，先構造一個原型，逐步增加功能，最終滿足需求。統(tǒng)中大量采用SQL查詢語句，界面友好，功能較強。采用SQLSERVER作為數(shù)據(jù)庫，解決訪問速度及數(shù)據(jù)共享的問題。力求易于使用，具有較高的擴展性和可維護性。第二章系統(tǒng)分析----------------------------------------------------------------------------4. 系統(tǒng)的初步調(diào)查-------------------------------------------------------------------4. 第三章系統(tǒng)設計----------------------------------------------------------------------------10. 第四章系統(tǒng)編碼與實現(xiàn)--------------------------------------------------------------------20. 開發(fā)工具的選擇-------------------------------------------------------------------21. 第五章系統(tǒng)運行與維護-------------------------------------------------------------------51. 第六章開發(fā)總結---------------------------------------------------------------------------53. 附錄：參考文獻------------------------------------------------------------------------------54. 之為“信息資源”，信息資源的處理已經(jīng)成為當今世界上一項主要的社會活動。在計算機在硬件方面的發(fā)展已達到了每三個月更新?lián)Q代一次的驚人速度。

　　

【正文】 EXACT OFF 【退出】按鈕的“ Click”事件代碼： 第五章 系統(tǒng)運行與維護 管理信息系統(tǒng)在完成系統(tǒng)實施、投入正常運行之后，就進入了系統(tǒng)運行與維護階段。 系統(tǒng)的配置 硬件配置要求 (最低 )： CPU： PII200 以上。 內(nèi)存： 32MB 以上。 硬盤： 以上 打印機：推薦 EPSON LQ1600KII 軟件配置要求： WINDOWS95/98/2021 中文版操作系統(tǒng)。 系統(tǒng)的運行 在安裝了 VF 的計算機上，在程序目錄，雙擊可執(zhí)行文件即可。 系統(tǒng)的維護 系統(tǒng)維護的目的是保證管理信息系統(tǒng)正常而可靠地運行，并能使系統(tǒng)不斷得到改善和提高，以充分發(fā)揮作用。換言之，系統(tǒng)維護就是為了保證系統(tǒng)中的各個要素隨著環(huán)境的變化始終處于最新的、正確的工作狀態(tài)。系統(tǒng)維護的工作量往往是很大的，其費用大約占整個生命周期的 60%，所以我們必須對系統(tǒng)維護給予足夠的重視。 系統(tǒng)維護的內(nèi)容 按照維護對象的不 同，系統(tǒng)維護的內(nèi)容可分為以下幾類： （ 1）系統(tǒng)應用程序維護 （ 2）數(shù)據(jù)維護 （ 3）代碼維護 （ 4）硬件設備維護 系統(tǒng)維護的類型 系統(tǒng)維護的重點是系統(tǒng)應用軟件的維護工作，按照軟件維護的不同性質(zhì)，可以劃分為下面四種類型： （ 1）糾錯性維護 診斷和修正系統(tǒng)中遺留的錯誤。 （ 2）適應性維護 使系統(tǒng)適用環(huán)境的變化而進行的維護。 （ 3）完善性維護 為滿足用戶的需求而進行的維護。 （ 4）預防性維護 為將要發(fā)生的變化或調(diào)整而 進行的主動性維護。 本系統(tǒng)的維護模塊 ? 權限更改 權限更改界面 第六章 開發(fā)總結 通過三個多月的系統(tǒng)開發(fā)，資料信息管理系統(tǒng)系統(tǒng)完成。在系統(tǒng)的開發(fā)過程中，以前學習感到很抽象的課程，如軟件工程、數(shù)據(jù)庫原理、面向?qū)ο蟪绦蛟O等變得清晰起來。感覺到這幾門理論課程的重要性。 以前做一些應用的系統(tǒng)開發(fā)，隨意性大，想到那里做到那里，沒有統(tǒng) 一的規(guī)劃，一旦系統(tǒng)成型，出現(xiàn)錯誤返工修改工作量大，最終的系統(tǒng)可靠性不高。另外一直以來，進行程序設計均采用結構化開發(fā)方法，對系統(tǒng)的全貌難以在開發(fā)前看到，導致實現(xiàn)的系統(tǒng)不滿足需求。 這次的畢業(yè)設計開發(fā)，主要有以下幾點收獲： 1．對原型化的系統(tǒng)開發(fā)方法有了一定的了解。漸增式的原型化開發(fā)方法與面向?qū)ο蟮某绦蛟O計的結合不但能在系統(tǒng)開發(fā)初期讓用戶了解系統(tǒng)的概貌，而且能使系統(tǒng)開發(fā)模塊化，提高開發(fā)效率，減少出錯。對于后期的系統(tǒng)維護也提供了很大的幫助。 2．通過實踐，提高了系統(tǒng)分析的能力，對數(shù)據(jù)流圖、數(shù)據(jù)字典、系統(tǒng)流程圖等系 統(tǒng)設計工具的使用有了更深刻的認識。為以后的工作、學習的進一步提高打下了堅實的基礎。 致謝 感謝學校以認真負責的態(tài)度為我們組織這次畢業(yè)設計以及畢業(yè)論文答辨。你們的嚴格把關，對我們來說有很大的壓力。在這種壓力下促使我們以最快的速度融入到軟件開發(fā)理論的應用中去，通過這次煅煉，使我們的系統(tǒng)開發(fā)水平各方面都有了較大的進步。由此積累的經(jīng)驗將對我們以后的學習和生活產(chǎn)生幫助。 感謝我的指導老師，在畢業(yè)設計時幫助選題，在設計的過程中提出了許多有益的建議和意見，同時他先進的軟件開發(fā)理念和 思維方式也給我很大的啟發(fā)。 參考資料 《管理信息系統(tǒng)導論》 黃梯云 機械工業(yè)出版社 《 管理信息系統(tǒng)》 黃梯云 經(jīng)濟科學出版社 《計算機應用基礎教程》 周澄華、楊洪 中國經(jīng)濟出版社 《信息系統(tǒng)開發(fā)》 甘仞初 經(jīng)濟科學出版社 《數(shù)據(jù)組織與結構》 王珊 經(jīng)濟科學出版社 《軟件開發(fā)工具》 方美琪 經(jīng)濟科學出版社 《 Visual 中文程序員指南》 北京希望電腦 Billy saw service with the infantry in Europe, and was taken prisoner by the Germans. After his honorable discharge from the Army in 1945, Billy again enrolled in the Ilium School of Optometry. During his senior year there, he became engaged to the daughter of the founder and owner of the school, and then suffered a mild nervous collapse. He was treated in a veterans39。 hospital near Lake Placid, and was given shock treatments and released. He married his fianc 閑 , finished his education, and was set up in business in Ilium by his fatherinlaw. Ilium is a particularly good city for optometrists because the General Fe and Foundry Company is there. Every employee is required to own a pair of safety glasses, and to wear them in areas where manufacturing is going on. GFamp。F has sixtyeight thousand employees in Ilium. That calls for a lot of lenses and a lot of frames. Frames are where the money istion of coalmines was far distant and there was no dread of scarcity. There were still extensive mines to be worked in the two Americas. The manufactories, appropriated to so many different uses, lootives, steamers, gas works, amp。c., were not likely to fail for want of the mineral fuel。 but the consumption had so increased during the last few years, that certain beds had been exhausted even to their smallest veins. Now deserted, these mines perforated the ground with their useless shafts and forsaken galleries. This was exactly the case with the pits of Aberfoyle. Ten years before, the last butty had raised the last ton of coal from this colliery. The underground working stock, traction engines, trucks which run on rails along the galleries, subterranean tramways, frames to support the shaft, pipes in short, all that constituted the machinery of a mine had been brought up from its depths. The exhausted mine was like the body of a huge fantasticallyshaped mastodon, from which all the ans of life have been taken, and only the skeleton remains. Nothing was left but long wooden ladders, down the Yarrow shaft the s, carpenters, outside and inside laborers, women, children, and old men, all were collected in the great yard of the Dochart pit, formerly heaped with coal from the mine. Many of these families had existed for generations in the mine of old Aberfoyle。 they were now driven to seek the means of subsistence elsewhere, and they waited sadly to bid farewell to the engineer. James Starr stood upright, at the door of the vast shed in which he had for so many years superintended the powerful machines of the shaft. Simon Ford, the foreman of the Dochart pit, then fiftyfive years of age, and other managers and overseers, surrounded him. James Starr took off his hat. The miners, cap in hand, kept a profound silence. This farewell scene was of a touching character, not wanting in grandeur. My friends, said the engineer, the time has e for us to separate. The Aberfoyle mines, which for so many years have united us in a mon work, are now exhausted. All our researches have not led to the discovery of a new vein, and the last block of coal has just been extracted from the Dochart pit. And in confirmation of his words, James Starr pointed to a lump of coal which had been kept at the bottom of a basket. This piece of coal, my friends, resumed James Starr, is like the last drop of blood which has flowed through the veins of the mine! We shall keep it, as the first fragment of coal is kept, which was extracted a hundred and fifty years ago from the bearings of Aberfoyle. Between these two pieces, how many generations of workmen have succeeded each other in our pits! Now, it is over! The last words which your engineer will address to you are a farewell. You have lived in this mine, which your hands ha