【導(dǎo)讀】和維護(hù)以及前端應(yīng)用程序的開發(fā)兩個方面。對于前者要求建立起數(shù)據(jù)一致性和完整性強(qiáng)、數(shù)。據(jù)安全性好的庫。而對于后者則要求應(yīng)用程序功能完備,易使用等特點(diǎn)。出一時間段內(nèi)的教師工作量。查詢功能也是系統(tǒng)的核心之一。此外，系統(tǒng)有完整的用戶添加、刪除和密碼修改功能，并具備報(bào)表打印功能。對教師而言，工作量是教師勞動的重要表現(xiàn)因素，來定獎勤罰懶的措施，提高教師的工作積極性。由于種種原因，現(xiàn)在教師工作量管理上存在著不及時、不準(zhǔn)確的現(xiàn)象。教師除可獲得學(xué)生成績的基本數(shù)據(jù)外，還可按要求獲得相應(yīng)的分析結(jié)果。而且從長遠(yuǎn)發(fā)展來看，根據(jù)本校的實(shí)際情況和發(fā)展目標(biāo)開發(fā)。VisualBasic的前身是QBASIC，語言基礎(chǔ)是BASIC。自從微軟推出VB后，據(jù)統(tǒng)計(jì)，僅在數(shù)據(jù)庫系統(tǒng)開發(fā)領(lǐng)域，VB就。占了90％的份額。類似，Delphi的IDE中具有主控制窗體、對象查看窗口和窗體設(shè)計(jì)器。置方案，并且進(jìn)而確定組成系統(tǒng)的每個程序的結(jié)構(gòu)。塊組成，這些模塊之間的接口關(guān)系應(yīng)盡量簡單。

　　

【正文】 負(fù)責(zé)的工作態(tài)度給我留下了深刻的印象。在這幾個月的工作和學(xué)習(xí)生活中，我收益匪淺。他無論在理論上還是在實(shí)踐中，都給與我很大的幫助，使我得到不少的提高，即使在百忙中，抽出了很多時間對我的論文進(jìn)行的批改和修正。使得我的論文不斷完完美，對數(shù)據(jù)庫和 VB 程序有了更深的學(xué)習(xí)。在我不能夠去學(xué)校讓老師當(dāng)面指導(dǎo)的情況下，還是在通過電話和 Email 進(jìn)行交流和傳遞信息。這對于我以后的工作和學(xué)習(xí)都有一種巨大的幫助，衷心地感謝他耐心的輔導(dǎo)！ 其次我要感謝的是以前的同班同學(xué)，在一開始的調(diào)研和結(jié)構(gòu)化設(shè)計(jì)中他給予了我很大的幫 助，雖然后來由于種種原因沒能夠繼續(xù)指導(dǎo)我，但我還是要感謝他。給予我很大的幫助，不僅幫我解答了不少的難點(diǎn)，還給我提出了許多建議，我會以他為榜樣，更好地努力。將這種精神帶到以后的工作和學(xué)習(xí)，使得自己的工作更上一層樓。 最后，我衷心地感謝所有關(guān)心和幫助過我的人們。 參考文獻(xiàn) , 《 Database system implementation》 ,機(jī)械工業(yè)出版社 , 2021 GarcialMolina , Jeffrey , Jennifer Widom,《 An introduction to Database Systems(Seventh Edition), 機(jī)械工業(yè)出版社 ,2021 , 郭安源 , 葛曉東 , 《教育信息化系統(tǒng)開發(fā)實(shí)例導(dǎo)航》 , 人民郵電出版社 ,2021 ,《數(shù)據(jù)庫開發(fā)技術(shù)與工程實(shí)踐》 ,人民郵電出版社 ,2021 , 王虹 等 《 Visual basic 中文版高級應(yīng)用與開發(fā)指南》 , 人民郵電出版社 , 2021 主編 等 《 VB課程設(shè)計(jì)與系統(tǒng)開發(fā)案例》清華大學(xué)出版社 , 2021 ，《 Visual Basic數(shù)據(jù)庫開發(fā)及工程實(shí)例》，人民郵電出版社 ，《 Visual Basic 數(shù)據(jù)庫開發(fā)技術(shù)與工程實(shí)踐》，人民郵電出版社， 2021 ，汪遠(yuǎn)征，《 Visual Basic程序設(shè)計(jì)教程》，機(jī)械工業(yè)出版社， 2021 ，周學(xué)明，郭安源，《 Visual Basic企業(yè)辦公系統(tǒng)開發(fā)實(shí)例導(dǎo)航》，人民郵電出版社，2021 ，王珊，《數(shù)據(jù)庫系統(tǒng)導(dǎo)論》，機(jī)械工業(yè)出版社， 2021 In the late summer of that year we lived in a house in a village that looked across the river and the plain to the mountains. In the bed of the river there were pebbles and boulders, dry and white in the sun, and the water was clear and swiftly moving and blue in the channels. Troops went by the house and dow n the road and the dust they raised powdered the leaves of the trees. The trunks of the trees too were dusty and the leaves fell early that year and we saw the troops marching along the road and the dust rising and leaves, stirred by the breeze, falling and the soldiers marching and afterward the road bare and white except for the leaves. The plain was r ich with crops。 there were many orchards of fruit trees and beyond the plain the mountains were brown and bare . There was fighting in the mountains and at night we could see the flashes from the artillery. In the dark it was like summer lightning, but the nights were cool and there was not the feeling of a storm ing. Sometimes in the dar k we heard the troops marching under the window and guns going past pulled by motortractors. There was much traffic at night and many mules on the roads with boxes of ammunition on each side of their pac ksaddles and gray motor trucks that carried men, and other trucks w ith loads covered with canvas that moved slower in the traffic. There were big guns too that passed in the day drawn by tractors, the long barrels of the guns covered with green branches and green leafy branches and vines laid over the tractors. To the north we could look across a valley and see a forest of chestnut trees and behind it another mountain on this side of the river. There was fighting for that mountain too, but it was not successful, and in the fall when the rains came the leaves all fell from the chestnut trees and the branches were bare and the trunks black w ith rain. The vineyards were thin and bare branched too and all the country wet and brown and dead with the autumn. There were mists over the river and clouds on the mountain and the truc ks splashed mud on the road and the troops were muddy and wet in their capes。 their rifles were wet and under their capes the two leather cartridge boxes on the front of the belts, gray leather boxes heavy with the packs of clips of thin, long mm. cartridges, bulged forward under the capes so that the men, passing on the road, marched as though they were six months gone with child. There were small gray motor cars that passed going very fast。 usually there was an officer on the seat w ith the driver and more officers in the back seat. They splashed more mud than the camions even and if one of the officers in the bac k was very small and sitting between two generals, he himself so small that you could not see his face but only the top of his cap and his narrow bac k, and if the car went especially fast it was probably the King. He lived in Udine and came out in this way nearly every day to see how things were going, and things went very badly. At the start of the winter came the permanent rain and with the rain came the cholera. But it was checked and in the end only seven thousand died of it in the army. ERNEST HEMINGWAY was born in Oak Park, Illinois, in 1899, and began his writing career for _The Kansas City Star_ in 1917. During the First World War he volunteered as an ambulance driver on the Italian front but was invalided home, having been seriously wounded while serving with the infantry. In 1921 He mingway settled in Paris, where he became part of the expatriate circle of Gertrude Stein, F. Scott Fitzgerald, Ezra Pound, and Ford Madox Ford. His first book, _Three Stories and Ten Poems_, was published in Paris in 1923 and was followed by the short story selection _In Our Time_, which marked his American debut in 1925. With the appearance of _The Sun Also Rises_ in 1926, Hemingway became not only the voice of the lost generation but the preeminent writer of his time. This was followed by _Men Without Women_ in 1927, when Hemingway returned to the United States, and his novel of the Italian front, _A Farewell to Arms_ (1929). In the 1930s, Hemingway settled in Key West, and later in Cuba, but he traveled widely to Spain, Italy, and Africaand wrote about his experiences in _Death in the Afternoon_ (1932), his classic treatise on bullfighting, and _Green Hills of Africa_ (1935), an account of biggame hunting in Africa. Later he reported on the Spanish Civil War, which became the background for his brilliant war novel, _For Whom the Bell Tolls_ (1939), hunted Uboats in the Caribbean, and covered the E uropean front during the Second World War. Hemingway39。s most popular wor k, _The O ld Man and the Sea_, was awarded the Pulitze r Prize in 1953, and in 1954 Hemingway won the Nobel Prize in Literature for his powerful, styleforming mastery of the art of narration.