本文档定义了XMP元数据的两个基本组件: -数据模型:数据模型是最基本的方面。这是一个抽象模型，定义了XMP元数据项的形式，本质上是XMP可以对资源进行的语句结构。 -序列化:XMP的序列化定义了如何将XMP数据模型的任何实例记录为XML。 此外，本文档还定义了一组核心属性，这些属性是XMP元数据项，可以应用于各种文件格式和使用领域。 以特定文件格式和特定于域的XMP属性嵌入XMP数据包超出了本文档的范围。

This document defines two essential components of XMP metadata: — Data model: The data model is the most fundamental aspect. This is an abstract model that defines the forms of XMP metadata items, essentially the structure of statements that XMP can make about resources. — Serialization: The serialization of XMP defines how any instance of the XMP data model can be recorded as XML. In addition, this document defines a collection of core properties, which are XMP metadata items that can be applied across a broad range of file formats and domains of usage. The embedding of XMP packets in specific file formats and domain-specific XMP properties are beyond the scope of this document.