【導(dǎo)讀】隨著的飛速發(fā)展，網(wǎng)絡(luò)已經(jīng)成為人們學(xué)習(xí)，工作，生活不可缺少的一部分。而局域網(wǎng)則是在網(wǎng)絡(luò)的另一個(gè)層次上為學(xué)習(xí)工作和生活提拱了很多便利。起一個(gè)組織內(nèi)部的獨(dú)立的計(jì)算機(jī)，使人們可以方便快捷的訪(fǎng)問(wèn)信息和獲取資源。Web源于靜態(tài)文本，現(xiàn)在很多站點(diǎn)還是采用這種方式。是維護(hù)難、查詢(xún)難、修改難。雖說(shuō)可以采用Dreamweaver對(duì)站點(diǎn)。進(jìn)行管理，但這只是其中的一個(gè)辦法。庫(kù)，動(dòng)態(tài)生成超文本。這樣，要改變式樣，只需修改幾個(gè)文件，要變更內(nèi)容，應(yīng)用，這種方式的優(yōu)越性就更為突出。都應(yīng)當(dāng)有相當(dāng)清晰的了解和認(rèn)識(shí)。數(shù)據(jù)庫(kù)應(yīng)用系統(tǒng)開(kāi)發(fā)的目標(biāo)是建立一個(gè)滿(mǎn)足用。戶(hù)長(zhǎng)期需求的產(chǎn)品。開(kāi)發(fā)的主要過(guò)程為：理解用戶(hù)的需求，然后，把它們轉(zhuǎn)變?yōu)?。有效的?shù)據(jù)庫(kù)設(shè)計(jì)。把設(shè)計(jì)轉(zhuǎn)變?yōu)閷?shí)際的數(shù)據(jù)庫(kù)，并且這些數(shù)據(jù)庫(kù)帶有功能完備、數(shù)據(jù)庫(kù)技術(shù)在計(jì)算機(jī)軟件鄰域研究中一直是非常重要的主

　　

【正文】 pitz 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。 dat Buck fight like two hells, was Francois39。s answer. And now we make good time. No more Spitz, no more trouble, sure. While Perrault packed the camp outfit and loaded the sled, the dogdriver proceeded to harness the dogs. Buck trotted up to the place Spitz would have occupied as leader。 but Francois, not noticing him, brought Solleks to the coveted position. In his judgment, Solleks was the best leaddog left. Buck sprang upon Solleks in a fury, driving him back and standing in his place. Eh? Eh? Francois cried, slapping his thighs gleefully. Look at dat Buck. Him kill dat Spitz, him think to take de job. Go 39。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。 nor did he attempt to charge in when Solle ks was once more brought forward. But he circled just beyond the range of the club, snarling with bitterness and rage。 and while he circled he watched the club so as to dodge it if thrown by Francois, for he was bee wise in the way of clubs. The driver went about his work, and he called to Buc k when he was ready to put him in his old place in front of Dave. Buck re treated two or three steps. Francois followed him up, whereupon he again retreated. After some time of this, Francois threw down the club, thinking that Buc k feared a thrashing. But Buc k was in open r evolt. He wanted, not to escape a clubbing, but to have the leadership. It was his by right. He had earned it, and he would not 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. The y 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。 and he answered curse w ith snarl and kept out of their reach. He did not try to run away, but retreated around and around the camp, advertising plainly that when his desire was met, he would e in and be good. Francois sat down and scratched his head. Perrault looked at his watch and swore. T ime was flying, and they should have been on the trail an hour gone. Francois scratched his head again. He shook it and grinned sheepishly at the courier, who shrugged his shoulders in sign that they were beaten. Then Francois went up to where Solleks stood and called to Buc k. Buc k laughed, as dogs laugh, yet kept his distance. Francois unfastened Sol leks39。s traces and put him back in his old place. The team stood harnessed to the sled in an unbroken line, 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。 and where judgment was required, and quick thinking and quick acting, he showed himself the superior even of Spitz, of whom Francois had never seen an equal. But it was in giving the law and making his mates live up to it, that Buck excelled. Dave and Solle ks did not mind the change in leadership. It was none of their business. Their business was to toil, and toil mightily, in the traces. So long as that was not interfered with, they did not care what happened. Billee, the goodnatured, could lead for all they cared, so long as he kept order. The rest of the team, however, had grown unruly during the last days of Spitz, and their surprise was great now that Buck proceeded to lick them into shape. Pike, who pulled at Buc k39。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。 and ere the first day was done he was pulling more than ever before in his life. The first night in camp, Joe, the sour one, was punished soundly a thing that Spitz had never succeeded in doing. Buc k simply smothered him by virtue of superior weight, and cut him up till he ceased snapping and began to whine for mercy. The general tone of the team picked up immediately. It recovered its oldtime solidarity, and once more the dogs leaped as one dog in the traces. At the Rink Rapids two native huskies, Tee k and Koona, were added。 and the celerity with which Buck broke them in took away Francois39。s breath. Never such a dog as dat Buck! he cried. No, never! Him worth one thousand dollair, by Gar! Eh? What you say, Perrault? And Perrault nodded. He was ahead of the record then, and gaining day by day. The trail was in excellent condition, well packed and hard, and there was no newfallen snow w ith which to contend. It was not too cold. The temperature dropped to fifty below zero and remained there the whole trip. The men rode and ran by turn, and the dogs were kept on the jump, with but infrequent st