我觉得把图书馆中的描述性元数据分为四类对于我们不无裨益。
I think it is useful to think of four sources of descriptive metadata in libraries.
SOA在整个服务生命周期中使用与服务描述相关联的描述性元数据。
SOA USES the descriptive metadata associated with the service description across the service life cycle.
这些是通过将服务描述与其实现分离并在整个服务生命周期中使用该描述性元数据来实现的。
These are realized by separating service descriptions from their implementations, and using this descriptive metadata across the service life cycle.
每个项都包含描述性元数据，其中包括一个名称、一块文本或HTML内容，以及一个指向更多信息的URL。
Each entry contains descriptive metadata, including a title, a block of text or HTML content, and a URL for more information.
RAS 可以为以下内容定义格式：描述性元数据、分类元数据、资产的用法元数据，以及内容的布局和内容元数据。
The RAS defines a format for the descriptive metadata, the classification metadata, and the usage metadata of an asset, as well as a layout for the content and the content's metadata.
XML也富含嵌入式元数据和其他描述性实体，比如模式和DocumentTypeDefinition (DTD)。
XML is also rich with embedded meta data and other descriptive entities such as schemas and Document Type Definitions (DTDs).
XML也富含嵌入式元数据和其他描述性实体，比如模式和DocumentTypeDefinition (DTD)。
XML is also rich with embedded meta data and other descriptive entities such as schemas and Document Type Definitions (DTDs).
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