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据有关材料统计,到1988年6月,国外生产的CD—ROM(只读光盘)数据库产品已达200多种;有的属于纯书目类,有的属全文类,也有的是数值类、图形类和混合类。内容包括培训计划、参考手册、用户一览表、名人录、专利、年鉴、词典、百科等几十种,企业情报、农业、教育、医学、药物等许多学科。美国1985—1990年CD—ROM 光盘系统的总销售额由28.2万美元增长到12.83亿美元。近几年来,我国图书情报部门已开始重视CD—ROM 的引进和应用。1988年11月份,仅据中图公司一家引进途径的统计,用户已达31家,共引进14种数据库。目前我国引进的CD—ROM 系统服务形式大约有两类:一是提供回溯检索(RSI)与定题服务(SDI),另一类是利用Bibiofile 数据库进行编目与文献采购管理。其余只引进CD—ROM光盘数据库(都是书目厍,且以医学专业居多)。
According to statistics on materials, by June 1988, there were over 200 kinds of CD-ROM database products produced abroad; some belonged to pure bibliographic categories, some were full-text categories, and others were numerical and graphic categories And mixed class. Contents include training programs, reference manuals, user lists, lists of celebrities, patents, yearbooks, dictionaries, encyclopedias, dozens of other kinds of business intelligence, agriculture, education, medicine, medicine and many other disciplines. The total sales of the CD-ROM system in the United States from 1985 to 1990 increased from 282,000 U.S. dollars to 1,283,000,000 U.S. dollars. In recent years, China’s library and information services departments have begun to pay attention to the introduction and application of CD-ROM. In November 1988, according to the statistics of the introduction route of one of the companies in the figure, the number of users reached 31 and a total of 14 kinds of databases were introduced. At present, there are about two types of CD-ROM system services introduced in our country: one is to provide RSI and SDI; the other is to use Bibiofile database for cataloging and document procurement management. The rest is only a CD-ROM CD-ROM database (both bibliography 且, and the majority of medical professionals).