90年代后期,信息化浪潮在全球范围内掀起,这一浪潮以美国为策源地,波及全世界。信息化浪潮所引发的基础建设,是图书馆所处信息环境发生变化的重要原因,也是实现虚拟图书馆的重要推动因素。虚拟图书馆的定义目前还难以确定,尚无统一的规范和界定基础,广义上讲,虚拟图书馆可以描述为计算机可处理文献信息的集合或储存这类信息的“仓库”。狭义上讲,虚拟图书馆相当于计算机网络化的图书馆系 In the late 1990s, the tide of information was set off on a global scale. This tide was dominated by the United States and spread all over the world. The infrastructure caused by the wave of informationization is an important reason for the change of information environment in the library and an important factor for promoting the virtual library. At present, the definition of virtual library is still difficult to determine. There is no unified norms and defined basis. In a broad sense, virtual library can be described as a collection of computer information that can be processed by the computer or stored in such a repository. Narrowly speaking, the virtual library is equivalent to the computer network library system