We model these ID and IDREF attributes in SDO with noncontainment references.

我们使用非包容引用建模 SDO 中的 ID 和 IDREF 属性。

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If the information is required to be in a standard DTD-like attribute type such as ID, IDREF, or ENTITY, use an attribute.

如果信息需要作为类似标准DTD的属性类型，如ID、IDREF或ENTITY，则使用属性。

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Using these attributes, an element may refer to one or more other elements (by including the value of those elements' ID fields in the pointing element's own IDREF or IDREFS field).

通过使用这些属性，元素可以引用一个或多个其它元素(通过在指向元素自己的IDREF或idrefs域中包含那些元素的标识字段的值)。

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