And then the author discusses the characteristics of american and chinese on line databases and their developing situations, and introduces such large datasets as dialog, stn, ebscohost and oclc firstsearch in this part, the author also takes medline as an example 論文分析了網(wǎng)絡(luò)數(shù)據(jù)庫(kù)的特點(diǎn)及美國(guó)、中國(guó)在線數(shù)據(jù)庫(kù)發(fā)展?fàn)顩r,并對(duì)在世界上影響較大的一些數(shù)據(jù)庫(kù)如dialog、stn、ebscohost、oclcfirstsearch列表分析,對(duì)著名的醫(yī)學(xué)數(shù)據(jù)庫(kù)medline實(shí)例介紹。