该模型的设计参照了OMG和ODMG标准，支持对象和文字、类及其属性、方法和关系、外延和多重继承等概念。
Referring to the OMG and ODMG standard, the model includes the OO concepts, such as Objects, Literals, Attributes, Methods, Relationships, Extents and Multi-inheritance, etc.
该模型的设计参照了OMG和ODMG标准，支持对象和文字、类及其属性、方法和关系、外延和多重继承等概念。
Referring to the OMG and ODMG standard, the model includes the OO concepts, such as Objects, Literals, Attributes, Methods, Relationships, Extents and Multi-inheritance, etc.
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