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1 引言随着网络技术的普及,越来越多的数字图书馆系统出现在互联网上。而由于经费、收益和网络安全等方面的原因,这些数字图书馆系统都在相对封闭的体制内运行,各种图书元数据库大都以结构化数据的形式存储在各种大型数据库中,不同馆际之间的互操作性很差。各自封闭的数字图书馆系统不适应网络社会知识开放、共享的趋势。虽然很多网络图书馆通过中间件技术或者数据库授权的方式实现这些数据的远程访问,但这种访问需要对双方的底层开发程序进行修改,技术难度大,发量较困难。
1 Introduction With the popularization of network technology, more and more digital library systems appear on the Internet. Due to the reasons such as funds, income and network security, these digital library systems all operate within a relatively closed system. Most of the book metadata databases are stored in various large databases in the form of structured data. Different libraries Interoperability is poor. Their closed digital library systems do not adapt to the trend of openness and sharing of knowledge in online society. Although many web libraries implement remote access to these data through middleware technology or database authorization, such access requires modification of the underlying development programs of both parties, which is technically difficult and difficult to send.