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自从美国国立医学图书馆于1964年建立了第一个计算机数据库以来,数据库在数量上和规模上都有了长足的发展,数据库行业已形成了“产-供-销”的一整套服务。我国的数据库建设起步较晚,近几年虽有较快发展,但还未形成类似美国DIALOG那样的权威性系统。据不完全统计,截至1990年,我国已建立文献、事实、数值数据库300多个,记录量为100多万条;联机检索外文数据库容量已增加到2000万篇;还引进外文磁带60余种,数据光盘40余
Since the first national computer library was established by the National Library of Medicine in 1964, there has been a tremendous growth in both the number and the scale of databases. The database industry has formed a complete set of “production-supply-sales” services. China’s database construction started late, despite the rapid development in recent years, but has not formed a kind of authoritative system like the United States DIALOG. According to incomplete statistics, as of 1990, more than 300 documents, factual and numerical databases have been established in our country, recording more than 1 million records. The online database of foreign languages has been increased to 20 million in volume. More than 60 foreign language tapes have been imported, More than 40 data discs