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数据库是现代信息技术系统中的主要组成部分,它是为满足信息用户多种应用需要而按照一定的数据模型在计算机系统中组织、存储和使用的相互联系的数据集合。数据库被人们形象的简称为未来信息高速公路上的列车,是构成将来我国文献信息网络系统中的具体内容。近年来伴随着现代信息技术的广泛应用,我国数据库发展速度是惊人的,许多单位纷纷投入资金建立本系统、本部门内的各类信息数据库,1992年国家科委曾对当时全国各类数据库做过一次统计,能够对外提供数据服务、有一定覆盖面的数据库约为137个;而截止到1995年10月经国家计委、国家科委再次
Database is the main part of modern information technology system. It is a set of interlinked data that is organized, stored and used in a computer system according to a certain data model to meet the needs of information users. The database is shortened to the image of people as the train on the information superhighway in the future and is the specific content in the network system of the literature information in the future. In recent years, along with the extensive application of modern information technology, the development speed of our country’s databases is staggering. Many units invested their funds in establishing various kinds of information databases in this system and their own departments. In 1992, Once statistics, can provide data services to the outside world, a certain coverage of the database is about 137; and as of October 1995 by the State Planning Commission, the State Science and Technology once again