Metadata determines the model of resource organization and service in digital library by defining the organization structure of resources and repository which is made up of digital objects.
元数据通过定义数字图书馆信息资源的组织结构，以及由数字对象构成的资源库的组织结构，决定着数字图书馆资源的组织和利用方式。
Metadata is one of the key technologies in the development of digital library, and is a tool for knowledge organization and resource development.
元数据是数字图书馆建设的关键技术之一，是数字图书馆用以进行知识组织和资源发现的工具。
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