ISO/IEC 19509:2014支持ISO/IEC 19508中定义的元对象设施(MOF)核心。MOF是描述元模型的基础技术。它涵盖了广泛的领域，并且基于UML的一个受约束的子集。XMI是广泛使用的XML交换格式。它定义了在XML中描述对象所涉及的以下方面: 用XML元素和属性表示对象； 在同一文件内或跨文件链接对象的标准机制； 使用XML模式验证XMI文档； 对象标识，它允许根据ID和UUID从其他对象引用对象。 XMI通过指定EBNF生产规则来创建一致共享对象的XML文档和模式，描述了上述问题的解决方案。

ISO/IEC 19509:2014 supports the Meta Object Facility (MOF) Core defined in ISO/IEC 19508. MOF is the foundation technology for describing metamodels. It covers a wide range of domains, and is based on a constrained subset of UML. XMI is widely used XML interchange format. It defines the following aspects involved in describing objects in XML:

• the representation of objects in terms of XML elements and attributes;
• the standard mechanisms to link objects within the same file or across files;
• the validation of XMI documents using XML Schemas;
• object identity, which allows objects to be referenced from other objects in terms of IDs and UUIDs.

XMI describes solutions to the above issues by specifying EBNF production rules to create XML documents and Schemas that share objects consistently.